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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d 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Reed"},"publicationIDType":{"typeName":"publicationIDType","multiple":false,"typeClass":"controlledVocabulary","value":"doi"},"publicationIDNumber":{"typeName":"publicationIDNumber","multiple":false,"typeClass":"primitive","value":"10.6084/m9.figshare.31267321"},"publicationURL":{"typeName":"publicationURL","multiple":false,"typeClass":"primitive","value":"https://doi.org/10.6084/m9.figshare.31267321"}}]},{"typeName":"notesText","multiple":false,"typeClass":"primitive","value":"This is the replication data for the captioned experiments."},{"typeName":"depositor","multiple":false,"typeClass":"primitive","value":"Kunstadt, Robert"},{"typeName":"dateOfDeposit","multiple":false,"typeClass":"primitive","value":"2026-02-05"}]}},"files":[{"description":"3D-printing file","label":"260119 95% round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13436979,"persistentId":"","filename":"260119 95% 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It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .3mf file for printing the new version.","storageIdentifier":"s3://dvn-cloud:19c715acdd6-4a93e1c60295","rootDataFileId":-1,"md5":"44734836d38e45399de03d8308c6581d","checksum":{"type":"MD5","value":"44734836d38e45399de03d8308c6581d"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. 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It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","storageIdentifier":"s3://dvn-cloud:19c715c9927-301249944cc0","rootDataFileId":-1,"md5":"904f04bbaebde0719718737526014a54","checksum":{"type":"MD5","value":"904f04bbaebde0719718737526014a54"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. 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This is the Bambu Studio .3mf file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13591908,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":692884,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. 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This is the .STL file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13591909,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2289984,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb672c66-4a1f1b890200","rootDataFileId":-1,"md5":"916d799f9eda15934db5470b39abe3c2","checksum":{"type":"MD5","value":"916d799f9eda15934db5470b39abe3c2"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb56a588-acea2e77e8b2","rootDataFileId":-1,"md5":"3d3d429ba2c9dba3ea77c0fbcb2612e8","checksum":{"type":"MD5","value":"3d3d429ba2c9dba3ea77c0fbcb2612e8"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","label":"260307 tapered bore alto MP.stl","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13591906,"persistentId":"","filename":"260307 tapered bore alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315784,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. 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The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). 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It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. 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Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. 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It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. 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Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","label":"260521 260520 tapered 260109 adjustable ring ligature.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":14064044,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1223134,"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. 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","storageIdentifier":"s3://dvn-cloud-iqss:19e83bf727d-92a741b1b93c","rootDataFileId":-1,"md5":"e4946b743ecc040c9c3dffc646352433","checksum":{"type":"MD5","value":"e4946b743ecc040c9c3dffc646352433"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13985287,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1284584,"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","storageIdentifier":"s3://dvn-cloud-iqss:19e83c488e7-b138270b964c","rootDataFileId":-1,"md5":"cc7dbbbd8cadd129addc3c3892bf850d","checksum":{"type":"MD5","value":"cc7dbbbd8cadd129addc3c3892bf850d"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","label":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13985337,"persistentId":"","filename":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":342581,"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","storageIdentifier":"s3://dvn-cloud-iqss:19e83cf00ae-86c7ab625190","rootDataFileId":-1,"md5":"47c1e55b334c0148892ef0d406b49021","checksum":{"type":"MD5","value":"47c1e55b334c0148892ef0d406b49021"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. 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The compressed file includes photos of the updated ligature; .3mf files for its parts; and .STP files for the parts.","storageIdentifier":"s3://dvn-cloud-iqss:19e83b9c119-240e3304340a","rootDataFileId":-1,"md5":"cd0f6e7740bf388f1b9a7249a7e49b3f","checksum":{"type":"MD5","value":"cd0f6e7740bf388f1b9a7249a7e49b3f"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-09-22T21:51:37Z","fileAccessRequest":true}},{"description":"This mouthpiece is intermediate in diameter between the two versions uploaded on June 1. Infill is 66% 3D-honeycomb, hence relatively stiff. It is the currently-preferred design. Continue to check back for further updates from time to time. The corresponding .STL file is also being uploaded.","label":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":13989497,"persistentId":"","filename":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":435209,"description":"This mouthpiece is intermediate in diameter between the two versions uploaded on June 1. Infill is 66% 3D-honeycomb, hence relatively stiff. It is the currently-preferred design. Continue to check back for further updates from time to time. 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The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. The bore diameter is reduced by 0.005\" for a tighter fit on the neck cork. The corresponding .STL file is also being uploaded.","label":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":749508,"dataFile":{"id":14015801,"persistentId":"","filename":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":474281,"description":"This is a modification to the file uploaded on June 4, 2026. The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. 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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d 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Reed"},"publicationIDType":{"typeName":"publicationIDType","multiple":false,"typeClass":"controlledVocabulary","value":"doi"},"publicationIDNumber":{"typeName":"publicationIDNumber","multiple":false,"typeClass":"primitive","value":"10.6084/m9.figshare.31267321"},"publicationURL":{"typeName":"publicationURL","multiple":false,"typeClass":"primitive","value":"https://doi.org/10.6084/m9.figshare.31267321"}}]},{"typeName":"notesText","multiple":false,"typeClass":"primitive","value":"This is the replication data for the captioned experiments."},{"typeName":"depositor","multiple":false,"typeClass":"primitive","value":"Kunstadt, Robert"},{"typeName":"dateOfDeposit","multiple":false,"typeClass":"primitive","value":"2026-02-05"}]}},"files":[{"description":"3D-printing file","label":"260119 95% round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13436979,"persistentId":"","filename":"260119 95% 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That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. 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It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .3mf file for printing the new version.","storageIdentifier":"s3://dvn-cloud:19c715acdd6-4a93e1c60295","rootDataFileId":-1,"md5":"44734836d38e45399de03d8308c6581d","checksum":{"type":"MD5","value":"44734836d38e45399de03d8308c6581d"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","label":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13466441,"persistentId":"","filename":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315184,"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","storageIdentifier":"s3://dvn-cloud:19c715c9927-301249944cc0","rootDataFileId":-1,"md5":"904f04bbaebde0719718737526014a54","checksum":{"type":"MD5","value":"904f04bbaebde0719718737526014a54"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. 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This is the .STL file.","storageIdentifier":"s3://dvn-cloud:19c9f029978-d2dda3ad10a6","rootDataFileId":-1,"md5":"025ea08fce1d8e5949aef5156bb93dd7","checksum":{"type":"MD5","value":"025ea08fce1d8e5949aef5156bb93dd7"},"tabularData":false,"creationDate":"2026-02-27","publicationDate":"2026-02-27","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the Bambu Studio .3mf file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13591908,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":692884,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the Bambu Studio .3mf file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb653a37-4d8ca1984c8f","rootDataFileId":-1,"md5":"4a6f083128b08903ef079bc7c4a10348","checksum":{"type":"MD5","value":"4a6f083128b08903ef079bc7c4a10348"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13591909,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2289984,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb672c66-4a1f1b890200","rootDataFileId":-1,"md5":"916d799f9eda15934db5470b39abe3c2","checksum":{"type":"MD5","value":"916d799f9eda15934db5470b39abe3c2"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb56a588-acea2e77e8b2","rootDataFileId":-1,"md5":"3d3d429ba2c9dba3ea77c0fbcb2612e8","checksum":{"type":"MD5","value":"3d3d429ba2c9dba3ea77c0fbcb2612e8"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","label":"260307 tapered bore alto MP.stl","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13591906,"persistentId":"","filename":"260307 tapered bore alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315784,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb562547-682764c8f474","rootDataFileId":-1,"md5":"ae3c16f6cf17402d80cbb5d54c935058","checksum":{"type":"MD5","value":"ae3c16f6cf17402d80cbb5d54c935058"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"This is the .3mf file to accompany the related .stl file.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13631568,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137998,"description":"This is the .3mf file to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d2669b513-23a2f9453e72","rootDataFileId":-1,"md5":"4b2e7d1a5aee57d1554dacb7c7b91e7f","checksum":{"type":"MD5","value":"4b2e7d1a5aee57d1554dacb7c7b91e7f"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","label":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13644200,"persistentId":"","filename":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1428984,"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54e16dc1-055c97f6f8b2","rootDataFileId":-1,"md5":"0af951ceb208b817e4445452aef23f4c","checksum":{"type":"MD5","value":"0af951ceb208b817e4445452aef23f4c"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"This is the .PDF file with images to accompany the related .stl file.","label":"260325 images of fluted mouthpiece.pdf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13631647,"persistentId":"","filename":"260325 images of fluted mouthpiece.pdf","contentType":"application/pdf","friendlyType":"Adobe PDF","filesize":805440,"description":"This is the .PDF file with images to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d26773bdd-47a3036e72fb","rootDataFileId":-1,"md5":"7f21422d1b9bbdce5244988a0a1e4230","checksum":{"type":"MD5","value":"7f21422d1b9bbdce5244988a0a1e4230"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","storageIdentifier":"s3://dvn-cloud-iqss:19d49c1e707-cb74450c6ab4","rootDataFileId":-1,"md5":"48f4aa112f5398ca69d1fadc7daaf721","checksum":{"type":"MD5","value":"48f4aa112f5398ca69d1fadc7daaf721"},"tabularData":false,"creationDate":"2026-04-01","publicationDate":"2026-04-01","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. 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It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. 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Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-09-06T18:31:23Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","label":"260521 260520 tapered 260109 adjustable ring ligature.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":14064044,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1223134,"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. 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The corresponding .STL file is also being uploaded.","label":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":13989497,"persistentId":"","filename":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":435209,"description":"This mouthpiece is intermediate in diameter between the two versions uploaded on June 1. Infill is 66% 3D-honeycomb, hence relatively stiff. It is the currently-preferred design. Continue to check back for further updates from time to time. 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The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. The bore diameter is reduced by 0.005\" for a tighter fit on the neck cork. The corresponding .STL file is also being uploaded.","label":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747500,"dataFile":{"id":14015801,"persistentId":"","filename":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":474281,"description":"This is a modification to the file uploaded on June 4, 2026. The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. 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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d 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That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .3mf file for printing the new version.","label":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13466440,"persistentId":"","filename":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":698638,"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .3mf file for printing the new version.","storageIdentifier":"s3://dvn-cloud:19c715acdd6-4a93e1c60295","rootDataFileId":-1,"md5":"44734836d38e45399de03d8308c6581d","checksum":{"type":"MD5","value":"44734836d38e45399de03d8308c6581d"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","label":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13466441,"persistentId":"","filename":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315184,"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","storageIdentifier":"s3://dvn-cloud:19c715c9927-301249944cc0","rootDataFileId":-1,"md5":"904f04bbaebde0719718737526014a54","checksum":{"type":"MD5","value":"904f04bbaebde0719718737526014a54"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .3mf file.","label":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13577780,"persistentId":"","filename":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":691393,"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .3mf file.","storageIdentifier":"s3://dvn-cloud:19c9f04288c-85508e4dadb5","rootDataFileId":-1,"md5":"52f9f26a6e8aa5b3bc1b6716d41da7d5","checksum":{"type":"MD5","value":"52f9f26a6e8aa5b3bc1b6716d41da7d5"},"tabularData":false,"creationDate":"2026-02-27","publicationDate":"2026-02-27","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .STL file.","label":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13577779,"persistentId":"","filename":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2283784,"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .STL file.","storageIdentifier":"s3://dvn-cloud:19c9f029978-d2dda3ad10a6","rootDataFileId":-1,"md5":"025ea08fce1d8e5949aef5156bb93dd7","checksum":{"type":"MD5","value":"025ea08fce1d8e5949aef5156bb93dd7"},"tabularData":false,"creationDate":"2026-02-27","publicationDate":"2026-02-27","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the Bambu Studio .3mf file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13591908,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":692884,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the Bambu Studio .3mf file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb653a37-4d8ca1984c8f","rootDataFileId":-1,"md5":"4a6f083128b08903ef079bc7c4a10348","checksum":{"type":"MD5","value":"4a6f083128b08903ef079bc7c4a10348"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13591909,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2289984,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb672c66-4a1f1b890200","rootDataFileId":-1,"md5":"916d799f9eda15934db5470b39abe3c2","checksum":{"type":"MD5","value":"916d799f9eda15934db5470b39abe3c2"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb56a588-acea2e77e8b2","rootDataFileId":-1,"md5":"3d3d429ba2c9dba3ea77c0fbcb2612e8","checksum":{"type":"MD5","value":"3d3d429ba2c9dba3ea77c0fbcb2612e8"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","label":"260307 tapered bore alto MP.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13591906,"persistentId":"","filename":"260307 tapered bore alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315784,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb562547-682764c8f474","rootDataFileId":-1,"md5":"ae3c16f6cf17402d80cbb5d54c935058","checksum":{"type":"MD5","value":"ae3c16f6cf17402d80cbb5d54c935058"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .3mf file to accompany the related .stl file.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13631568,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137998,"description":"This is the .3mf file to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d2669b513-23a2f9453e72","rootDataFileId":-1,"md5":"4b2e7d1a5aee57d1554dacb7c7b91e7f","checksum":{"type":"MD5","value":"4b2e7d1a5aee57d1554dacb7c7b91e7f"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","label":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13644200,"persistentId":"","filename":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1428984,"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54e16dc1-055c97f6f8b2","rootDataFileId":-1,"md5":"0af951ceb208b817e4445452aef23f4c","checksum":{"type":"MD5","value":"0af951ceb208b817e4445452aef23f4c"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .PDF file with images to accompany the related .stl file.","label":"260325 images of fluted mouthpiece.pdf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13631647,"persistentId":"","filename":"260325 images of fluted mouthpiece.pdf","contentType":"application/pdf","friendlyType":"Adobe PDF","filesize":805440,"description":"This is the .PDF file with images to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d26773bdd-47a3036e72fb","rootDataFileId":-1,"md5":"7f21422d1b9bbdce5244988a0a1e4230","checksum":{"type":"MD5","value":"7f21422d1b9bbdce5244988a0a1e4230"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","storageIdentifier":"s3://dvn-cloud-iqss:19d49c1e707-cb74450c6ab4","rootDataFileId":-1,"md5":"48f4aa112f5398ca69d1fadc7daaf721","checksum":{"type":"MD5","value":"48f4aa112f5398ca69d1fadc7daaf721"},"tabularData":false,"creationDate":"2026-04-01","publicationDate":"2026-04-01","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54c1ff58-37db37371d24","rootDataFileId":-1,"md5":"b9f2a22633fb2d6b6961955bd13d9abe","checksum":{"type":"MD5","value":"b9f2a22633fb2d6b6961955bd13d9abe"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19d68965679-f05234868506","rootDataFileId":-1,"md5":"4db86d6db33196e022c49d9093b34fdd","checksum":{"type":"MD5","value":"4db86d6db33196e022c49d9093b34fdd"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","label":"260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13654160,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1412084,"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","storageIdentifier":"s3://dvn-cloud-iqss:19d689c96b3-dc24573f14c4","rootDataFileId":-1,"md5":"0c85f5f071cc25830671ce81d29cf3e0","checksum":{"type":"MD5","value":"0c85f5f071cc25830671ce81d29cf3e0"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13818987,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":403519,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56a67fa-42756390c81d","rootDataFileId":-1,"md5":"3e376d3e09a0da854849caa4c6fef3e0","checksum":{"type":"MD5","value":"3e376d3e09a0da854849caa4c6fef3e0"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. 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Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. 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Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. 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It plays strong over full range of high and low notes and has a fast response. The related .3mf file is also being uploaded.","label":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13985336,"persistentId":"","filename":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1056284,"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. 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","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13985278,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":412980,"description":"This is the .3mf file for an updated mouthpiece with narrower rails and a longer table. It uses 50% adaptive cubic infill, rather than 33%, which makes it brighter. The related .STL file is also being uploaded. ","storageIdentifier":"s3://dvn-cloud-iqss:19e83bf727d-92a741b1b93c","rootDataFileId":-1,"md5":"e4946b743ecc040c9c3dffc646352433","checksum":{"type":"MD5","value":"e4946b743ecc040c9c3dffc646352433"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13985287,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1284584,"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","storageIdentifier":"s3://dvn-cloud-iqss:19e83c488e7-b138270b964c","rootDataFileId":-1,"md5":"cc7dbbbd8cadd129addc3c3892bf850d","checksum":{"type":"MD5","value":"cc7dbbbd8cadd129addc3c3892bf850d"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","label":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13985337,"persistentId":"","filename":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":342581,"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","storageIdentifier":"s3://dvn-cloud-iqss:19e83cf00ae-86c7ab625190","rootDataFileId":-1,"md5":"47c1e55b334c0148892ef0d406b49021","checksum":{"type":"MD5","value":"47c1e55b334c0148892ef0d406b49021"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. 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The corresponding .STL file is also being uploaded.","label":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":13989497,"persistentId":"","filename":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":435209,"description":"This mouthpiece is intermediate in diameter between the two versions uploaded on June 1. Infill is 66% 3D-honeycomb, hence relatively stiff. It is the currently-preferred design. Continue to check back for further updates from time to time. 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The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. The bore diameter is reduced by 0.005\" for a tighter fit on the neck cork. The corresponding .STL file is also being uploaded.","label":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":14015801,"persistentId":"","filename":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":474281,"description":"This is a modification to the file uploaded on June 4, 2026. The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. 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The number of directional vanes in the chamber is still 4; and a higher baffle is provided. The bore diameter is reduced by only 0.002\" (rather than 0.005\" as before) for a looser fit on the neck cork. Additionally, the tip opening is increased by about 0.007\". The corresponding new .STL file is also being uploaded.","label":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":14037289,"persistentId":"","filename":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":428531,"description":"This is a modification to the file uploaded on June 20, 2026. The number of directional vanes in the chamber is still 4; and a higher baffle is provided. The bore diameter is reduced by only 0.002\" (rather than 0.005\" as before) for a looser fit on the neck cork. Additionally, the tip opening is increased by about 0.007\". The corresponding new .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19f18a9dd3e-559b4d5a9be4","rootDataFileId":-1,"md5":"b34426a90de424d283e2b0891cb96033","checksum":{"type":"MD5","value":"b34426a90de424d283e2b0891cb96033"},"tabularData":false,"creationDate":"2026-06-30","publicationDate":"2026-06-30","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .STL file corresponding to the .3mf file uploaded today.","label":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":14037290,"persistentId":"","filename":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1492884,"description":"This is the .STL file corresponding to the .3mf file uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f18b2bfc2-1d38af2ed881","rootDataFileId":-1,"md5":"f53eae3c2373cf99f7466a8f95923836","checksum":{"type":"MD5","value":"f53eae3c2373cf99f7466a8f95923836"},"tabularData":false,"creationDate":"2026-06-30","publicationDate":"2026-06-30","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .STL file corresponding to the .3mf file uploaded today.","label":"260703 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":14055185,"persistentId":"","filename":"260703 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1371884,"description":"This is the .STL file corresponding to the .3mf file uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f2d5127c0-deadd7d0a8e0","rootDataFileId":-1,"md5":"b90628e364166d86b82cdf3bc74d02d4","checksum":{"type":"MD5","value":"b90628e364166d86b82cdf3bc74d02d4"},"tabularData":false,"creationDate":"2026-07-04","publicationDate":"2026-07-04","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the same as the file uploaded June 4, 2026, except the bore diameter is 0.638\" rather than 0.640\" (for a tighter fit on the neck cork). Infill density is the same 66% (3D-honeycomb pattern). Densities of 55% and 77% were also tested at this time, but 66% is preferred. The corresponding .STL file is also being uploaded. Continue to check back for updates from time to time.","label":"260703B 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":14055184,"persistentId":"","filename":"260703B 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":408563,"description":"This is the same as the file uploaded June 4, 2026, except the bore diameter is 0.638\" rather than 0.640\" (for a tighter fit on the neck cork). Infill density is the same 66% (3D-honeycomb pattern). Densities of 55% and 77% were also tested at this time, but 66% is preferred. The corresponding .STL file is also being uploaded. Continue to check back for updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19f2d4dc3ce-6f828d7719e6","rootDataFileId":-1,"md5":"d973fd687179ddafec952cd1e91db605","checksum":{"type":"MD5","value":"d973fd687179ddafec952cd1e91db605"},"tabularData":false,"creationDate":"2026-07-04","publicationDate":"2026-07-04","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This new version is 3% shorter in the chamber, but the bore and table were extended to compensate for the overall 3% length reduction. The vanes are cut into separate elements, to reduce the resistance in the chamber when airflow encounters the face of the vanes. Also radiused the front of the vanes, for same reason. Furthermore, the number of vanes is reduced by eliminating alternate positions so there are now only 5 vanes, which are spaced twice as far apart.  Works well when playing Royal 2.5 cane reed using 0.6\" wide tapered adjustable split-ring ligature. Corresponding .STL file is also being uploaded today; as well as files for the tapered ligature. As a reminder: hand-polish the table and facing of 3D-printed mouthpieces with wet emery cloth (200 and 600 grit) on a flat surface.\n","label":"260710 260708 alto MP.3mf","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":14064041,"persistentId":"","filename":"260710 260708 alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":439424,"description":"This new version is 3% shorter in the chamber, but the bore and table were extended to compensate for the overall 3% length reduction. The vanes are cut into separate elements, to reduce the resistance in the chamber when airflow encounters the face of the vanes. Also radiused the front of the vanes, for same reason. Furthermore, the number of vanes is reduced by eliminating alternate positions so there are now only 5 vanes, which are spaced twice as far apart.  Works well when playing Royal 2.5 cane reed using 0.6\" wide tapered adjustable split-ring ligature. Corresponding .STL file is also being uploaded today; as well as files for the tapered ligature. As a reminder: hand-polish the table and facing of 3D-printed mouthpieces with wet emery cloth (200 and 600 grit) on a flat surface.\n","storageIdentifier":"s3://dvn-cloud-iqss:19f4de002ec-d9b68f87784b","rootDataFileId":-1,"md5":"414c678855d17277167f9df5574f7052","checksum":{"type":"MD5","value":"414c678855d17277167f9df5574f7052"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is the .STL file for the mouthpiece design uploaded today.","label":"260710 260708 alto MP.stl","restricted":false,"version":1,"datasetVersionId":747115,"dataFile":{"id":14064042,"persistentId":"","filename":"260710 260708 alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1373684,"description":"This is the .STL file for the mouthpiece design uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de36dff-df7c01e05e25","rootDataFileId":-1,"md5":"fcdd41035cdc5f56847d511d992bf2c9","checksum":{"type":"MD5","value":"fcdd41035cdc5f56847d511d992bf2c9"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-09-02T23:19:07Z","fileAccessRequest":true}},{"description":"This is an improvement to the design uploaded on June 30, 2026, using a baffle. 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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d 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This is the Bambu Studio .3mf file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13591908,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":692884,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the Bambu Studio .3mf file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb653a37-4d8ca1984c8f","rootDataFileId":-1,"md5":"4a6f083128b08903ef079bc7c4a10348","checksum":{"type":"MD5","value":"4a6f083128b08903ef079bc7c4a10348"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13591909,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2289984,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb672c66-4a1f1b890200","rootDataFileId":-1,"md5":"916d799f9eda15934db5470b39abe3c2","checksum":{"type":"MD5","value":"916d799f9eda15934db5470b39abe3c2"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb56a588-acea2e77e8b2","rootDataFileId":-1,"md5":"3d3d429ba2c9dba3ea77c0fbcb2612e8","checksum":{"type":"MD5","value":"3d3d429ba2c9dba3ea77c0fbcb2612e8"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","label":"260307 tapered bore alto MP.stl","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13591906,"persistentId":"","filename":"260307 tapered bore alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315784,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb562547-682764c8f474","rootDataFileId":-1,"md5":"ae3c16f6cf17402d80cbb5d54c935058","checksum":{"type":"MD5","value":"ae3c16f6cf17402d80cbb5d54c935058"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is the .3mf file to accompany the related .stl file.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13631568,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137998,"description":"This is the .3mf file to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d2669b513-23a2f9453e72","rootDataFileId":-1,"md5":"4b2e7d1a5aee57d1554dacb7c7b91e7f","checksum":{"type":"MD5","value":"4b2e7d1a5aee57d1554dacb7c7b91e7f"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","label":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13644200,"persistentId":"","filename":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1428984,"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54e16dc1-055c97f6f8b2","rootDataFileId":-1,"md5":"0af951ceb208b817e4445452aef23f4c","checksum":{"type":"MD5","value":"0af951ceb208b817e4445452aef23f4c"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is the .PDF file with images to accompany the related .stl file.","label":"260325 images of fluted mouthpiece.pdf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13631647,"persistentId":"","filename":"260325 images of fluted mouthpiece.pdf","contentType":"application/pdf","friendlyType":"Adobe PDF","filesize":805440,"description":"This is the .PDF file with images to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d26773bdd-47a3036e72fb","rootDataFileId":-1,"md5":"7f21422d1b9bbdce5244988a0a1e4230","checksum":{"type":"MD5","value":"7f21422d1b9bbdce5244988a0a1e4230"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","storageIdentifier":"s3://dvn-cloud-iqss:19d49c1e707-cb74450c6ab4","rootDataFileId":-1,"md5":"48f4aa112f5398ca69d1fadc7daaf721","checksum":{"type":"MD5","value":"48f4aa112f5398ca69d1fadc7daaf721"},"tabularData":false,"creationDate":"2026-04-01","publicationDate":"2026-04-01","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54c1ff58-37db37371d24","rootDataFileId":-1,"md5":"b9f2a22633fb2d6b6961955bd13d9abe","checksum":{"type":"MD5","value":"b9f2a22633fb2d6b6961955bd13d9abe"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19d68965679-f05234868506","rootDataFileId":-1,"md5":"4db86d6db33196e022c49d9093b34fdd","checksum":{"type":"MD5","value":"4db86d6db33196e022c49d9093b34fdd"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","label":"260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13654160,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1412084,"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","storageIdentifier":"s3://dvn-cloud-iqss:19d689c96b3-dc24573f14c4","rootDataFileId":-1,"md5":"0c85f5f071cc25830671ce81d29cf3e0","checksum":{"type":"MD5","value":"0c85f5f071cc25830671ce81d29cf3e0"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13818987,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":403519,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56a67fa-42756390c81d","rootDataFileId":-1,"md5":"3e376d3e09a0da854849caa4c6fef3e0","checksum":{"type":"MD5","value":"3e376d3e09a0da854849caa4c6fef3e0"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13819028,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1259484,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56ec53a-40cfab253735","rootDataFileId":-1,"md5":"07b70534960a9c1653cc70d6e26c8d36","checksum":{"type":"MD5","value":"07b70534960a9c1653cc70d6e26c8d36"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","label":"260521 260520 tapered 260109 adjustable ring ligature.3mf","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":14064044,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1223134,"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de44068-e76d730d23d8","rootDataFileId":-1,"md5":"74dbfefb4d9fc7cb8d6f4c168580a52a","checksum":{"type":"MD5","value":"74dbfefb4d9fc7cb8d6f4c168580a52a"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","label":"260521 260520 tapered 260109 adjustable ring ligature.stl","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":14064045,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3926784,"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de6fe6c-e5b51040eb7c","rootDataFileId":-1,"md5":"31739bb11934f1b64aaad54921b007fa","checksum":{"type":"MD5","value":"31739bb11934f1b64aaad54921b007fa"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-08-25T10:01:07Z","fileAccessRequest":true}},{"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. The related .3mf file is also being uploaded.","label":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":746111,"dataFile":{"id":13985336,"persistentId":"","filename":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1056284,"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. 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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d 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This is the .STL file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb672c66-4a1f1b890200","rootDataFileId":-1,"md5":"916d799f9eda15934db5470b39abe3c2","checksum":{"type":"MD5","value":"916d799f9eda15934db5470b39abe3c2"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb56a588-acea2e77e8b2","rootDataFileId":-1,"md5":"3d3d429ba2c9dba3ea77c0fbcb2612e8","checksum":{"type":"MD5","value":"3d3d429ba2c9dba3ea77c0fbcb2612e8"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","label":"260307 tapered bore alto MP.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13591906,"persistentId":"","filename":"260307 tapered bore alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315784,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb562547-682764c8f474","rootDataFileId":-1,"md5":"ae3c16f6cf17402d80cbb5d54c935058","checksum":{"type":"MD5","value":"ae3c16f6cf17402d80cbb5d54c935058"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .3mf file to accompany the related .stl file.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13631568,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137998,"description":"This is the .3mf file to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d2669b513-23a2f9453e72","rootDataFileId":-1,"md5":"4b2e7d1a5aee57d1554dacb7c7b91e7f","checksum":{"type":"MD5","value":"4b2e7d1a5aee57d1554dacb7c7b91e7f"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","label":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13644200,"persistentId":"","filename":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1428984,"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54e16dc1-055c97f6f8b2","rootDataFileId":-1,"md5":"0af951ceb208b817e4445452aef23f4c","checksum":{"type":"MD5","value":"0af951ceb208b817e4445452aef23f4c"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .PDF file with images to accompany the related .stl file.","label":"260325 images of fluted mouthpiece.pdf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13631647,"persistentId":"","filename":"260325 images of fluted mouthpiece.pdf","contentType":"application/pdf","friendlyType":"Adobe PDF","filesize":805440,"description":"This is the .PDF file with images to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d26773bdd-47a3036e72fb","rootDataFileId":-1,"md5":"7f21422d1b9bbdce5244988a0a1e4230","checksum":{"type":"MD5","value":"7f21422d1b9bbdce5244988a0a1e4230"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","storageIdentifier":"s3://dvn-cloud-iqss:19d49c1e707-cb74450c6ab4","rootDataFileId":-1,"md5":"48f4aa112f5398ca69d1fadc7daaf721","checksum":{"type":"MD5","value":"48f4aa112f5398ca69d1fadc7daaf721"},"tabularData":false,"creationDate":"2026-04-01","publicationDate":"2026-04-01","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54c1ff58-37db37371d24","rootDataFileId":-1,"md5":"b9f2a22633fb2d6b6961955bd13d9abe","checksum":{"type":"MD5","value":"b9f2a22633fb2d6b6961955bd13d9abe"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19d68965679-f05234868506","rootDataFileId":-1,"md5":"4db86d6db33196e022c49d9093b34fdd","checksum":{"type":"MD5","value":"4db86d6db33196e022c49d9093b34fdd"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","label":"260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13654160,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1412084,"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","storageIdentifier":"s3://dvn-cloud-iqss:19d689c96b3-dc24573f14c4","rootDataFileId":-1,"md5":"0c85f5f071cc25830671ce81d29cf3e0","checksum":{"type":"MD5","value":"0c85f5f071cc25830671ce81d29cf3e0"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13818987,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":403519,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56a67fa-42756390c81d","rootDataFileId":-1,"md5":"3e376d3e09a0da854849caa4c6fef3e0","checksum":{"type":"MD5","value":"3e376d3e09a0da854849caa4c6fef3e0"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13819028,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1259484,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56ec53a-40cfab253735","rootDataFileId":-1,"md5":"07b70534960a9c1653cc70d6e26c8d36","checksum":{"type":"MD5","value":"07b70534960a9c1653cc70d6e26c8d36"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","label":"260521 260520 tapered 260109 adjustable ring ligature.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":14064044,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1223134,"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de44068-e76d730d23d8","rootDataFileId":-1,"md5":"74dbfefb4d9fc7cb8d6f4c168580a52a","checksum":{"type":"MD5","value":"74dbfefb4d9fc7cb8d6f4c168580a52a"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","label":"260521 260520 tapered 260109 adjustable ring ligature.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":14064045,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3926784,"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de6fe6c-e5b51040eb7c","rootDataFileId":-1,"md5":"31739bb11934f1b64aaad54921b007fa","checksum":{"type":"MD5","value":"31739bb11934f1b64aaad54921b007fa"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. The related .3mf file is also being uploaded.","label":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13985336,"persistentId":"","filename":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1056284,"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. The related .3mf file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19e83cc073a-db5c281d66c5","rootDataFileId":-1,"md5":"d1e7ca52e358efc855e5f34ef93fd104","checksum":{"type":"MD5","value":"d1e7ca52e358efc855e5f34ef93fd104"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .3mf file for an updated mouthpiece with narrower rails and a longer table. It uses 50% adaptive cubic infill, rather than 33%, which makes it brighter. The related .STL file is also being uploaded. ","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13985278,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":412980,"description":"This is the .3mf file for an updated mouthpiece with narrower rails and a longer table. It uses 50% adaptive cubic infill, rather than 33%, which makes it brighter. The related .STL file is also being uploaded. ","storageIdentifier":"s3://dvn-cloud-iqss:19e83bf727d-92a741b1b93c","rootDataFileId":-1,"md5":"e4946b743ecc040c9c3dffc646352433","checksum":{"type":"MD5","value":"e4946b743ecc040c9c3dffc646352433"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13985287,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1284584,"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","storageIdentifier":"s3://dvn-cloud-iqss:19e83c488e7-b138270b964c","rootDataFileId":-1,"md5":"cc7dbbbd8cadd129addc3c3892bf850d","checksum":{"type":"MD5","value":"cc7dbbbd8cadd129addc3c3892bf850d"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","label":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":13985337,"persistentId":"","filename":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":342581,"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","storageIdentifier":"s3://dvn-cloud-iqss:19e83cf00ae-86c7ab625190","rootDataFileId":-1,"md5":"47c1e55b334c0148892ef0d406b49021","checksum":{"type":"MD5","value":"47c1e55b334c0148892ef0d406b49021"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. 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Continue to check back for updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19f2d4dc3ce-6f828d7719e6","rootDataFileId":-1,"md5":"d973fd687179ddafec952cd1e91db605","checksum":{"type":"MD5","value":"d973fd687179ddafec952cd1e91db605"},"tabularData":false,"creationDate":"2026-07-04","publicationDate":"2026-07-04","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This new version is 3% shorter in the chamber, but the bore and table were extended to compensate for the overall 3% length reduction. The vanes are cut into separate elements, to reduce the resistance in the chamber when airflow encounters the face of the vanes. Also radiused the front of the vanes, for same reason. Furthermore, the number of vanes is reduced by eliminating alternate positions so there are now only 5 vanes, which are spaced twice as far apart.  Works well when playing Royal 2.5 cane reed using 0.6\" wide tapered adjustable split-ring ligature. Corresponding .STL file is also being uploaded today; as well as files for the tapered ligature. As a reminder: hand-polish the table and facing of 3D-printed mouthpieces with wet emery cloth (200 and 600 grit) on a flat surface.\n","label":"260710 260708 alto MP.3mf","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":14064041,"persistentId":"","filename":"260710 260708 alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":439424,"description":"This new version is 3% shorter in the chamber, but the bore and table were extended to compensate for the overall 3% length reduction. The vanes are cut into separate elements, to reduce the resistance in the chamber when airflow encounters the face of the vanes. Also radiused the front of the vanes, for same reason. Furthermore, the number of vanes is reduced by eliminating alternate positions so there are now only 5 vanes, which are spaced twice as far apart.  Works well when playing Royal 2.5 cane reed using 0.6\" wide tapered adjustable split-ring ligature. Corresponding .STL file is also being uploaded today; as well as files for the tapered ligature. As a reminder: hand-polish the table and facing of 3D-printed mouthpieces with wet emery cloth (200 and 600 grit) on a flat surface.\n","storageIdentifier":"s3://dvn-cloud-iqss:19f4de002ec-d9b68f87784b","rootDataFileId":-1,"md5":"414c678855d17277167f9df5574f7052","checksum":{"type":"MD5","value":"414c678855d17277167f9df5574f7052"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .STL file for the mouthpiece design uploaded today.","label":"260710 260708 alto MP.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":14064042,"persistentId":"","filename":"260710 260708 alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1373684,"description":"This is the .STL file for the mouthpiece design uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de36dff-df7c01e05e25","rootDataFileId":-1,"md5":"fcdd41035cdc5f56847d511d992bf2c9","checksum":{"type":"MD5","value":"fcdd41035cdc5f56847d511d992bf2c9"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is an improvement to the design uploaded on June 30, 2026, using a baffle. 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","storageIdentifier":"s3://dvn-cloud-iqss:19f812a744a-3e1cf737c028","rootDataFileId":-1,"md5":"cea9dd00c33e4ee6eedfe47aae978c43","checksum":{"type":"MD5","value":"cea9dd00c33e4ee6eedfe47aae978c43"},"tabularData":false,"creationDate":"2026-07-20","publicationDate":"2026-07-20","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is the .STL file corresponding to the .3mf file uploaded today.","label":"260720 260710 alto MP.stl","restricted":false,"version":1,"datasetVersionId":743670,"dataFile":{"id":14087382,"persistentId":"","filename":"260720 260710 alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1384084,"description":"This is the .STL file corresponding to the .3mf file uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f812d9fca-fb5bb0f304e4","rootDataFileId":-1,"md5":"c50f7489b566c646c354c046bf6f30f0","checksum":{"type":"MD5","value":"c50f7489b566c646c354c046bf6f30f0"},"tabularData":false,"creationDate":"2026-07-20","publicationDate":"2026-07-20","lastUpdateTime":"2026-08-01T01:15:27Z","fileAccessRequest":true}},{"description":"This is a spacer which can be clipped onto the \"H\" region of a D'Adarrio HAS1 ligature to reduce its diameter to fit the mouthpiece uploaded July 20, 2026 (and others of similar diameter). 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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d 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This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. 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A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. 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The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). 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If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54e16dc1-055c97f6f8b2","rootDataFileId":-1,"md5":"0af951ceb208b817e4445452aef23f4c","checksum":{"type":"MD5","value":"0af951ceb208b817e4445452aef23f4c"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is the .PDF file with images to accompany the related .stl file.","label":"260325 images of fluted mouthpiece.pdf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13631647,"persistentId":"","filename":"260325 images of fluted mouthpiece.pdf","contentType":"application/pdf","friendlyType":"Adobe PDF","filesize":805440,"description":"This is the .PDF file with images to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d26773bdd-47a3036e72fb","rootDataFileId":-1,"md5":"7f21422d1b9bbdce5244988a0a1e4230","checksum":{"type":"MD5","value":"7f21422d1b9bbdce5244988a0a1e4230"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","storageIdentifier":"s3://dvn-cloud-iqss:19d49c1e707-cb74450c6ab4","rootDataFileId":-1,"md5":"48f4aa112f5398ca69d1fadc7daaf721","checksum":{"type":"MD5","value":"48f4aa112f5398ca69d1fadc7daaf721"},"tabularData":false,"creationDate":"2026-04-01","publicationDate":"2026-04-01","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54c1ff58-37db37371d24","rootDataFileId":-1,"md5":"b9f2a22633fb2d6b6961955bd13d9abe","checksum":{"type":"MD5","value":"b9f2a22633fb2d6b6961955bd13d9abe"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19d68965679-f05234868506","rootDataFileId":-1,"md5":"4db86d6db33196e022c49d9093b34fdd","checksum":{"type":"MD5","value":"4db86d6db33196e022c49d9093b34fdd"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","label":"260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13654160,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1412084,"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","storageIdentifier":"s3://dvn-cloud-iqss:19d689c96b3-dc24573f14c4","rootDataFileId":-1,"md5":"0c85f5f071cc25830671ce81d29cf3e0","checksum":{"type":"MD5","value":"0c85f5f071cc25830671ce81d29cf3e0"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13818987,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":403519,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56a67fa-42756390c81d","rootDataFileId":-1,"md5":"3e376d3e09a0da854849caa4c6fef3e0","checksum":{"type":"MD5","value":"3e376d3e09a0da854849caa4c6fef3e0"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13819028,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1259484,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56ec53a-40cfab253735","rootDataFileId":-1,"md5":"07b70534960a9c1653cc70d6e26c8d36","checksum":{"type":"MD5","value":"07b70534960a9c1653cc70d6e26c8d36"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","label":"260521 260520 tapered 260109 adjustable ring ligature.3mf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":14064044,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1223134,"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de44068-e76d730d23d8","rootDataFileId":-1,"md5":"74dbfefb4d9fc7cb8d6f4c168580a52a","checksum":{"type":"MD5","value":"74dbfefb4d9fc7cb8d6f4c168580a52a"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","label":"260521 260520 tapered 260109 adjustable ring ligature.stl","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":14064045,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3926784,"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de6fe6c-e5b51040eb7c","rootDataFileId":-1,"md5":"31739bb11934f1b64aaad54921b007fa","checksum":{"type":"MD5","value":"31739bb11934f1b64aaad54921b007fa"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. The related .3mf file is also being uploaded.","label":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13985336,"persistentId":"","filename":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1056284,"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. 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","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13985278,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":412980,"description":"This is the .3mf file for an updated mouthpiece with narrower rails and a longer table. It uses 50% adaptive cubic infill, rather than 33%, which makes it brighter. The related .STL file is also being uploaded. ","storageIdentifier":"s3://dvn-cloud-iqss:19e83bf727d-92a741b1b93c","rootDataFileId":-1,"md5":"e4946b743ecc040c9c3dffc646352433","checksum":{"type":"MD5","value":"e4946b743ecc040c9c3dffc646352433"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13985287,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1284584,"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","storageIdentifier":"s3://dvn-cloud-iqss:19e83c488e7-b138270b964c","rootDataFileId":-1,"md5":"cc7dbbbd8cadd129addc3c3892bf850d","checksum":{"type":"MD5","value":"cc7dbbbd8cadd129addc3c3892bf850d"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","label":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13985337,"persistentId":"","filename":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":342581,"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","storageIdentifier":"s3://dvn-cloud-iqss:19e83cf00ae-86c7ab625190","rootDataFileId":-1,"md5":"47c1e55b334c0148892ef0d406b49021","checksum":{"type":"MD5","value":"47c1e55b334c0148892ef0d406b49021"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. The updated version provides a lever-action cam to facilitate securing and releasing the ligature from the mouthpiece and reed. The compressed file includes photos of the updated ligature; .3mf files for its parts; and .STP files for the parts.","label":"260530 FLAT-SLOT Cammed 260525 0.8 tapered 260109 adjustable ring ligature.zip","restricted":false,"version":1,"datasetVersionId":742639,"dataFile":{"id":13985274,"persistentId":"","filename":"260530 FLAT-SLOT Cammed 260525 0.8 tapered 260109 adjustable ring ligature.zip","contentType":"application/zip","friendlyType":"ZIP Archive","filesize":17342575,"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. The updated version provides a lever-action cam to facilitate securing and releasing the ligature from the mouthpiece and reed. The compressed file includes photos of the updated ligature; .3mf files for its parts; and .STP files for the parts.","storageIdentifier":"s3://dvn-cloud-iqss:19e83b9c119-240e3304340a","rootDataFileId":-1,"md5":"cd0f6e7740bf388f1b9a7249a7e49b3f","checksum":{"type":"MD5","value":"cd0f6e7740bf388f1b9a7249a7e49b3f"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-21T22:03:37Z","fileAccessRequest":true}},{"description":"This mouthpiece is intermediate in diameter between the two versions uploaded on June 1. Infill is 66% 3D-honeycomb, hence relatively stiff. It is the currently-preferred design. Continue to check back for further updates from time to time. 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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d printing"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"density"}}]},{"typeName":"publication","multiple":true,"typeClass":"compound","value":[{"publicationRelationType":{"typeName":"publicationRelationType","multiple":false,"typeClass":"controlledVocabulary","value":"IsSupplementTo"},"publicationCitation":{"typeName":"publicationCitation","multiple":false,"typeClass":"primitive","value":"Density Experiments on Vortex-generating Saxophone Mouthpiece for Synthetic Reed"},"publicationIDType":{"typeName":"publicationIDType","multiple":false,"typeClass":"controlledVocabulary","value":"doi"},"publicationIDNumber":{"typeName":"publicationIDNumber","multiple":false,"typeClass":"primitive","value":"10.6084/m9.figshare.31267321"},"publicationURL":{"typeName":"publicationURL","multiple":false,"typeClass":"primitive","value":"https://doi.org/10.6084/m9.figshare.31267321"}}]},{"typeName":"notesText","multiple":false,"typeClass":"primitive","value":"This is the replication data for the captioned experiments."},{"typeName":"depositor","multiple":false,"typeClass":"primitive","value":"Kunstadt, Robert"},{"typeName":"dateOfDeposit","multiple":false,"typeClass":"primitive","value":"2026-02-05"}]}},"files":[{"description":"3D-printing file","label":"260119 95% round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13436979,"persistentId":"","filename":"260119 95% 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It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .3mf file for printing the new version.","storageIdentifier":"s3://dvn-cloud:19c715acdd6-4a93e1c60295","rootDataFileId":-1,"md5":"44734836d38e45399de03d8308c6581d","checksum":{"type":"MD5","value":"44734836d38e45399de03d8308c6581d"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. 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It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","storageIdentifier":"s3://dvn-cloud:19c715c9927-301249944cc0","rootDataFileId":-1,"md5":"904f04bbaebde0719718737526014a54","checksum":{"type":"MD5","value":"904f04bbaebde0719718737526014a54"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. 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This is the Bambu Studio .3mf file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13591908,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":692884,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. 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This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb56a588-acea2e77e8b2","rootDataFileId":-1,"md5":"3d3d429ba2c9dba3ea77c0fbcb2612e8","checksum":{"type":"MD5","value":"3d3d429ba2c9dba3ea77c0fbcb2612e8"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","label":"260307 tapered bore alto MP.stl","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13591906,"persistentId":"","filename":"260307 tapered bore alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315784,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb562547-682764c8f474","rootDataFileId":-1,"md5":"ae3c16f6cf17402d80cbb5d54c935058","checksum":{"type":"MD5","value":"ae3c16f6cf17402d80cbb5d54c935058"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This is the .3mf file to accompany the related .stl file.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13631568,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137998,"description":"This is the .3mf file to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d2669b513-23a2f9453e72","rootDataFileId":-1,"md5":"4b2e7d1a5aee57d1554dacb7c7b91e7f","checksum":{"type":"MD5","value":"4b2e7d1a5aee57d1554dacb7c7b91e7f"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","label":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13644200,"persistentId":"","filename":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1428984,"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54e16dc1-055c97f6f8b2","rootDataFileId":-1,"md5":"0af951ceb208b817e4445452aef23f4c","checksum":{"type":"MD5","value":"0af951ceb208b817e4445452aef23f4c"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This is the .PDF file with images to accompany the related .stl file.","label":"260325 images of fluted mouthpiece.pdf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13631647,"persistentId":"","filename":"260325 images of fluted mouthpiece.pdf","contentType":"application/pdf","friendlyType":"Adobe PDF","filesize":805440,"description":"This is the .PDF file with images to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d26773bdd-47a3036e72fb","rootDataFileId":-1,"md5":"7f21422d1b9bbdce5244988a0a1e4230","checksum":{"type":"MD5","value":"7f21422d1b9bbdce5244988a0a1e4230"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","storageIdentifier":"s3://dvn-cloud-iqss:19d49c1e707-cb74450c6ab4","rootDataFileId":-1,"md5":"48f4aa112f5398ca69d1fadc7daaf721","checksum":{"type":"MD5","value":"48f4aa112f5398ca69d1fadc7daaf721"},"tabularData":false,"creationDate":"2026-04-01","publicationDate":"2026-04-01","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54c1ff58-37db37371d24","rootDataFileId":-1,"md5":"b9f2a22633fb2d6b6961955bd13d9abe","checksum":{"type":"MD5","value":"b9f2a22633fb2d6b6961955bd13d9abe"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. 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Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","label":"260521 260520 tapered 260109 adjustable ring ligature.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":14064044,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1223134,"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de44068-e76d730d23d8","rootDataFileId":-1,"md5":"74dbfefb4d9fc7cb8d6f4c168580a52a","checksum":{"type":"MD5","value":"74dbfefb4d9fc7cb8d6f4c168580a52a"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","label":"260521 260520 tapered 260109 adjustable ring ligature.stl","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":14064045,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3926784,"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de6fe6c-e5b51040eb7c","rootDataFileId":-1,"md5":"31739bb11934f1b64aaad54921b007fa","checksum":{"type":"MD5","value":"31739bb11934f1b64aaad54921b007fa"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. The related .3mf file is also being uploaded.","label":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13985336,"persistentId":"","filename":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1056284,"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. 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","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13985278,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":412980,"description":"This is the .3mf file for an updated mouthpiece with narrower rails and a longer table. It uses 50% adaptive cubic infill, rather than 33%, which makes it brighter. The related .STL file is also being uploaded. 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The updated version provides a lever-action cam to facilitate securing and releasing the ligature from the mouthpiece and reed. The compressed file includes photos of the updated ligature; .3mf files for its parts; and .STP files for the parts.","label":"260530 FLAT-SLOT Cammed 260525 0.8 tapered 260109 adjustable ring ligature.zip","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13985274,"persistentId":"","filename":"260530 FLAT-SLOT Cammed 260525 0.8 tapered 260109 adjustable ring ligature.zip","contentType":"application/zip","friendlyType":"ZIP Archive","filesize":17342575,"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. The updated version provides a lever-action cam to facilitate securing and releasing the ligature from the mouthpiece and reed. The compressed file includes photos of the updated ligature; .3mf files for its parts; and .STP files for the parts.","storageIdentifier":"s3://dvn-cloud-iqss:19e83b9c119-240e3304340a","rootDataFileId":-1,"md5":"cd0f6e7740bf388f1b9a7249a7e49b3f","checksum":{"type":"MD5","value":"cd0f6e7740bf388f1b9a7249a7e49b3f"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-21T06:06:55Z","fileAccessRequest":true}},{"description":"This mouthpiece is intermediate in diameter between the two versions uploaded on June 1. Infill is 66% 3D-honeycomb, hence relatively stiff. It is the currently-preferred design. Continue to check back for further updates from time to time. The corresponding .STL file is also being uploaded.","label":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":13989497,"persistentId":"","filename":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":435209,"description":"This mouthpiece is intermediate in diameter between the two versions uploaded on June 1. Infill is 66% 3D-honeycomb, hence relatively stiff. It is the currently-preferred design. Continue to check back for further updates from time to time. 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The number of directional vanes in the chamber is still 4; and a higher baffle is provided. The bore diameter is reduced by only 0.002\" (rather than 0.005\" as before) for a looser fit on the neck cork. Additionally, the tip opening is increased by about 0.007\". The corresponding new .STL file is also being uploaded.","label":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739566,"dataFile":{"id":14037289,"persistentId":"","filename":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":428531,"description":"This is a modification to the file uploaded on June 20, 2026. The number of directional vanes in the chamber is still 4; and a higher baffle is provided. The bore diameter is reduced by only 0.002\" (rather than 0.005\" as before) for a looser fit on the neck cork. 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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d 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Reed"},"publicationIDType":{"typeName":"publicationIDType","multiple":false,"typeClass":"controlledVocabulary","value":"doi"},"publicationIDNumber":{"typeName":"publicationIDNumber","multiple":false,"typeClass":"primitive","value":"10.6084/m9.figshare.31267321"},"publicationURL":{"typeName":"publicationURL","multiple":false,"typeClass":"primitive","value":"https://doi.org/10.6084/m9.figshare.31267321"}}]},{"typeName":"notesText","multiple":false,"typeClass":"primitive","value":"This is the replication data for the captioned experiments."},{"typeName":"depositor","multiple":false,"typeClass":"primitive","value":"Kunstadt, Robert"},{"typeName":"dateOfDeposit","multiple":false,"typeClass":"primitive","value":"2026-02-05"}]}},"files":[{"description":"3D-printing file","label":"260119 95% round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13436979,"persistentId":"","filename":"260119 95% 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It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .3mf file for printing the new version.","storageIdentifier":"s3://dvn-cloud:19c715acdd6-4a93e1c60295","rootDataFileId":-1,"md5":"44734836d38e45399de03d8308c6581d","checksum":{"type":"MD5","value":"44734836d38e45399de03d8308c6581d"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","label":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13466441,"persistentId":"","filename":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315184,"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","storageIdentifier":"s3://dvn-cloud:19c715c9927-301249944cc0","rootDataFileId":-1,"md5":"904f04bbaebde0719718737526014a54","checksum":{"type":"MD5","value":"904f04bbaebde0719718737526014a54"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .3mf file.","label":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13577780,"persistentId":"","filename":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":691393,"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .3mf file.","storageIdentifier":"s3://dvn-cloud:19c9f04288c-85508e4dadb5","rootDataFileId":-1,"md5":"52f9f26a6e8aa5b3bc1b6716d41da7d5","checksum":{"type":"MD5","value":"52f9f26a6e8aa5b3bc1b6716d41da7d5"},"tabularData":false,"creationDate":"2026-02-27","publicationDate":"2026-02-27","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .STL file.","label":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13577779,"persistentId":"","filename":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2283784,"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .STL file.","storageIdentifier":"s3://dvn-cloud:19c9f029978-d2dda3ad10a6","rootDataFileId":-1,"md5":"025ea08fce1d8e5949aef5156bb93dd7","checksum":{"type":"MD5","value":"025ea08fce1d8e5949aef5156bb93dd7"},"tabularData":false,"creationDate":"2026-02-27","publicationDate":"2026-02-27","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the Bambu Studio .3mf file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13591908,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":692884,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the Bambu Studio .3mf file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb653a37-4d8ca1984c8f","rootDataFileId":-1,"md5":"4a6f083128b08903ef079bc7c4a10348","checksum":{"type":"MD5","value":"4a6f083128b08903ef079bc7c4a10348"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13591909,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2289984,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb672c66-4a1f1b890200","rootDataFileId":-1,"md5":"916d799f9eda15934db5470b39abe3c2","checksum":{"type":"MD5","value":"916d799f9eda15934db5470b39abe3c2"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb56a588-acea2e77e8b2","rootDataFileId":-1,"md5":"3d3d429ba2c9dba3ea77c0fbcb2612e8","checksum":{"type":"MD5","value":"3d3d429ba2c9dba3ea77c0fbcb2612e8"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","label":"260307 tapered bore alto MP.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13591906,"persistentId":"","filename":"260307 tapered bore alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315784,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb562547-682764c8f474","rootDataFileId":-1,"md5":"ae3c16f6cf17402d80cbb5d54c935058","checksum":{"type":"MD5","value":"ae3c16f6cf17402d80cbb5d54c935058"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .3mf file to accompany the related .stl file.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13631568,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137998,"description":"This is the .3mf file to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d2669b513-23a2f9453e72","rootDataFileId":-1,"md5":"4b2e7d1a5aee57d1554dacb7c7b91e7f","checksum":{"type":"MD5","value":"4b2e7d1a5aee57d1554dacb7c7b91e7f"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","label":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13644200,"persistentId":"","filename":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1428984,"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54e16dc1-055c97f6f8b2","rootDataFileId":-1,"md5":"0af951ceb208b817e4445452aef23f4c","checksum":{"type":"MD5","value":"0af951ceb208b817e4445452aef23f4c"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .PDF file with images to accompany the related .stl file.","label":"260325 images of fluted mouthpiece.pdf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13631647,"persistentId":"","filename":"260325 images of fluted mouthpiece.pdf","contentType":"application/pdf","friendlyType":"Adobe PDF","filesize":805440,"description":"This is the .PDF file with images to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d26773bdd-47a3036e72fb","rootDataFileId":-1,"md5":"7f21422d1b9bbdce5244988a0a1e4230","checksum":{"type":"MD5","value":"7f21422d1b9bbdce5244988a0a1e4230"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","storageIdentifier":"s3://dvn-cloud-iqss:19d49c1e707-cb74450c6ab4","rootDataFileId":-1,"md5":"48f4aa112f5398ca69d1fadc7daaf721","checksum":{"type":"MD5","value":"48f4aa112f5398ca69d1fadc7daaf721"},"tabularData":false,"creationDate":"2026-04-01","publicationDate":"2026-04-01","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54c1ff58-37db37371d24","rootDataFileId":-1,"md5":"b9f2a22633fb2d6b6961955bd13d9abe","checksum":{"type":"MD5","value":"b9f2a22633fb2d6b6961955bd13d9abe"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19d68965679-f05234868506","rootDataFileId":-1,"md5":"4db86d6db33196e022c49d9093b34fdd","checksum":{"type":"MD5","value":"4db86d6db33196e022c49d9093b34fdd"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","label":"260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13654160,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1412084,"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","storageIdentifier":"s3://dvn-cloud-iqss:19d689c96b3-dc24573f14c4","rootDataFileId":-1,"md5":"0c85f5f071cc25830671ce81d29cf3e0","checksum":{"type":"MD5","value":"0c85f5f071cc25830671ce81d29cf3e0"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13818987,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":403519,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56a67fa-42756390c81d","rootDataFileId":-1,"md5":"3e376d3e09a0da854849caa4c6fef3e0","checksum":{"type":"MD5","value":"3e376d3e09a0da854849caa4c6fef3e0"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13819028,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1259484,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56ec53a-40cfab253735","rootDataFileId":-1,"md5":"07b70534960a9c1653cc70d6e26c8d36","checksum":{"type":"MD5","value":"07b70534960a9c1653cc70d6e26c8d36"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. 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Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. 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It plays strong over full range of high and low notes and has a fast response. The related .3mf file is also being uploaded.","label":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13985336,"persistentId":"","filename":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1056284,"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. 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","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13985278,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":412980,"description":"This is the .3mf file for an updated mouthpiece with narrower rails and a longer table. It uses 50% adaptive cubic infill, rather than 33%, which makes it brighter. The related .STL file is also being uploaded. ","storageIdentifier":"s3://dvn-cloud-iqss:19e83bf727d-92a741b1b93c","rootDataFileId":-1,"md5":"e4946b743ecc040c9c3dffc646352433","checksum":{"type":"MD5","value":"e4946b743ecc040c9c3dffc646352433"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13985287,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1284584,"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","storageIdentifier":"s3://dvn-cloud-iqss:19e83c488e7-b138270b964c","rootDataFileId":-1,"md5":"cc7dbbbd8cadd129addc3c3892bf850d","checksum":{"type":"MD5","value":"cc7dbbbd8cadd129addc3c3892bf850d"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","label":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13985337,"persistentId":"","filename":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":342581,"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","storageIdentifier":"s3://dvn-cloud-iqss:19e83cf00ae-86c7ab625190","rootDataFileId":-1,"md5":"47c1e55b334c0148892ef0d406b49021","checksum":{"type":"MD5","value":"47c1e55b334c0148892ef0d406b49021"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. 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The corresponding .STL file is also being uploaded.","label":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":13989497,"persistentId":"","filename":"260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":435209,"description":"This mouthpiece is intermediate in diameter between the two versions uploaded on June 1. Infill is 66% 3D-honeycomb, hence relatively stiff. It is the currently-preferred design. Continue to check back for further updates from time to time. 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The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. The bore diameter is reduced by 0.005\" for a tighter fit on the neck cork. The corresponding .STL file is also being uploaded.","label":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":14015801,"persistentId":"","filename":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":474281,"description":"This is a modification to the file uploaded on June 4, 2026. The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. 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The number of directional vanes in the chamber is still 4; and a higher baffle is provided. The bore diameter is reduced by only 0.002\" (rather than 0.005\" as before) for a looser fit on the neck cork. Additionally, the tip opening is increased by about 0.007\". The corresponding new .STL file is also being uploaded.","label":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":14037289,"persistentId":"","filename":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":428531,"description":"This is a modification to the file uploaded on June 20, 2026. The number of directional vanes in the chamber is still 4; and a higher baffle is provided. The bore diameter is reduced by only 0.002\" (rather than 0.005\" as before) for a looser fit on the neck cork. Additionally, the tip opening is increased by about 0.007\". The corresponding new .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19f18a9dd3e-559b4d5a9be4","rootDataFileId":-1,"md5":"b34426a90de424d283e2b0891cb96033","checksum":{"type":"MD5","value":"b34426a90de424d283e2b0891cb96033"},"tabularData":false,"creationDate":"2026-06-30","publicationDate":"2026-06-30","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .STL file corresponding to the .3mf file uploaded today.","label":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":14037290,"persistentId":"","filename":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1492884,"description":"This is the .STL file corresponding to the .3mf file uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f18b2bfc2-1d38af2ed881","rootDataFileId":-1,"md5":"f53eae3c2373cf99f7466a8f95923836","checksum":{"type":"MD5","value":"f53eae3c2373cf99f7466a8f95923836"},"tabularData":false,"creationDate":"2026-06-30","publicationDate":"2026-06-30","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .STL file corresponding to the .3mf file uploaded today.","label":"260703 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":14055185,"persistentId":"","filename":"260703 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1371884,"description":"This is the .STL file corresponding to the .3mf file uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f2d5127c0-deadd7d0a8e0","rootDataFileId":-1,"md5":"b90628e364166d86b82cdf3bc74d02d4","checksum":{"type":"MD5","value":"b90628e364166d86b82cdf3bc74d02d4"},"tabularData":false,"creationDate":"2026-07-04","publicationDate":"2026-07-04","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the same as the file uploaded June 4, 2026, except the bore diameter is 0.638\" rather than 0.640\" (for a tighter fit on the neck cork). Infill density is the same 66% (3D-honeycomb pattern). Densities of 55% and 77% were also tested at this time, but 66% is preferred. The corresponding .STL file is also being uploaded. Continue to check back for updates from time to time.","label":"260703B 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":14055184,"persistentId":"","filename":"260703B 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":408563,"description":"This is the same as the file uploaded June 4, 2026, except the bore diameter is 0.638\" rather than 0.640\" (for a tighter fit on the neck cork). Infill density is the same 66% (3D-honeycomb pattern). Densities of 55% and 77% were also tested at this time, but 66% is preferred. The corresponding .STL file is also being uploaded. Continue to check back for updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19f2d4dc3ce-6f828d7719e6","rootDataFileId":-1,"md5":"d973fd687179ddafec952cd1e91db605","checksum":{"type":"MD5","value":"d973fd687179ddafec952cd1e91db605"},"tabularData":false,"creationDate":"2026-07-04","publicationDate":"2026-07-04","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This new version is 3% shorter in the chamber, but the bore and table were extended to compensate for the overall 3% length reduction. The vanes are cut into separate elements, to reduce the resistance in the chamber when airflow encounters the face of the vanes. Also radiused the front of the vanes, for same reason. Furthermore, the number of vanes is reduced by eliminating alternate positions so there are now only 5 vanes, which are spaced twice as far apart.  Works well when playing Royal 2.5 cane reed using 0.6\" wide tapered adjustable split-ring ligature. Corresponding .STL file is also being uploaded today; as well as files for the tapered ligature. As a reminder: hand-polish the table and facing of 3D-printed mouthpieces with wet emery cloth (200 and 600 grit) on a flat surface.\n","label":"260710 260708 alto MP.3mf","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":14064041,"persistentId":"","filename":"260710 260708 alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":439424,"description":"This new version is 3% shorter in the chamber, but the bore and table were extended to compensate for the overall 3% length reduction. The vanes are cut into separate elements, to reduce the resistance in the chamber when airflow encounters the face of the vanes. Also radiused the front of the vanes, for same reason. Furthermore, the number of vanes is reduced by eliminating alternate positions so there are now only 5 vanes, which are spaced twice as far apart.  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As a reminder: hand-polish the table and facing of 3D-printed mouthpieces with wet emery cloth (200 and 600 grit) on a flat surface.\n","storageIdentifier":"s3://dvn-cloud-iqss:19f4de002ec-d9b68f87784b","rootDataFileId":-1,"md5":"414c678855d17277167f9df5574f7052","checksum":{"type":"MD5","value":"414c678855d17277167f9df5574f7052"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is the .STL file for the mouthpiece design uploaded today.","label":"260710 260708 alto MP.stl","restricted":false,"version":1,"datasetVersionId":739534,"dataFile":{"id":14064042,"persistentId":"","filename":"260710 260708 alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1373684,"description":"This is the .STL file for the mouthpiece design uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de36dff-df7c01e05e25","rootDataFileId":-1,"md5":"fcdd41035cdc5f56847d511d992bf2c9","checksum":{"type":"MD5","value":"fcdd41035cdc5f56847d511d992bf2c9"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-07-20T20:19:57Z","fileAccessRequest":true}},{"description":"This is an improvement to the design uploaded on June 30, 2026, using a baffle. 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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d 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This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. 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A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. 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The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). 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If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54e16dc1-055c97f6f8b2","rootDataFileId":-1,"md5":"0af951ceb208b817e4445452aef23f4c","checksum":{"type":"MD5","value":"0af951ceb208b817e4445452aef23f4c"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is the .PDF file with images to accompany the related .stl file.","label":"260325 images of fluted mouthpiece.pdf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13631647,"persistentId":"","filename":"260325 images of fluted mouthpiece.pdf","contentType":"application/pdf","friendlyType":"Adobe PDF","filesize":805440,"description":"This is the .PDF file with images to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d26773bdd-47a3036e72fb","rootDataFileId":-1,"md5":"7f21422d1b9bbdce5244988a0a1e4230","checksum":{"type":"MD5","value":"7f21422d1b9bbdce5244988a0a1e4230"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","storageIdentifier":"s3://dvn-cloud-iqss:19d49c1e707-cb74450c6ab4","rootDataFileId":-1,"md5":"48f4aa112f5398ca69d1fadc7daaf721","checksum":{"type":"MD5","value":"48f4aa112f5398ca69d1fadc7daaf721"},"tabularData":false,"creationDate":"2026-04-01","publicationDate":"2026-04-01","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54c1ff58-37db37371d24","rootDataFileId":-1,"md5":"b9f2a22633fb2d6b6961955bd13d9abe","checksum":{"type":"MD5","value":"b9f2a22633fb2d6b6961955bd13d9abe"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19d68965679-f05234868506","rootDataFileId":-1,"md5":"4db86d6db33196e022c49d9093b34fdd","checksum":{"type":"MD5","value":"4db86d6db33196e022c49d9093b34fdd"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","label":"260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13654160,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1412084,"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","storageIdentifier":"s3://dvn-cloud-iqss:19d689c96b3-dc24573f14c4","rootDataFileId":-1,"md5":"0c85f5f071cc25830671ce81d29cf3e0","checksum":{"type":"MD5","value":"0c85f5f071cc25830671ce81d29cf3e0"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13818987,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":403519,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56a67fa-42756390c81d","rootDataFileId":-1,"md5":"3e376d3e09a0da854849caa4c6fef3e0","checksum":{"type":"MD5","value":"3e376d3e09a0da854849caa4c6fef3e0"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13819028,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1259484,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56ec53a-40cfab253735","rootDataFileId":-1,"md5":"07b70534960a9c1653cc70d6e26c8d36","checksum":{"type":"MD5","value":"07b70534960a9c1653cc70d6e26c8d36"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","label":"260521 260520 tapered 260109 adjustable ring ligature.3mf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":14064044,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1223134,"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. Corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de44068-e76d730d23d8","rootDataFileId":-1,"md5":"74dbfefb4d9fc7cb8d6f4c168580a52a","checksum":{"type":"MD5","value":"74dbfefb4d9fc7cb8d6f4c168580a52a"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","label":"260521 260520 tapered 260109 adjustable ring ligature.stl","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":14064045,"persistentId":"","filename":"260521 260520 tapered 260109 adjustable ring ligature.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3926784,"description":"This is the .STL file for the tapered split-ring ligature uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f4de6fe6c-e5b51040eb7c","rootDataFileId":-1,"md5":"31739bb11934f1b64aaad54921b007fa","checksum":{"type":"MD5","value":"31739bb11934f1b64aaad54921b007fa"},"tabularData":false,"creationDate":"2026-07-10","publicationDate":"2026-07-10","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. The related .3mf file is also being uploaded.","label":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13985336,"persistentId":"","filename":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1056284,"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. 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","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13985278,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":412980,"description":"This is the .3mf file for an updated mouthpiece with narrower rails and a longer table. It uses 50% adaptive cubic infill, rather than 33%, which makes it brighter. The related .STL file is also being uploaded. ","storageIdentifier":"s3://dvn-cloud-iqss:19e83bf727d-92a741b1b93c","rootDataFileId":-1,"md5":"e4946b743ecc040c9c3dffc646352433","checksum":{"type":"MD5","value":"e4946b743ecc040c9c3dffc646352433"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13985287,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1284584,"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","storageIdentifier":"s3://dvn-cloud-iqss:19e83c488e7-b138270b964c","rootDataFileId":-1,"md5":"cc7dbbbd8cadd129addc3c3892bf850d","checksum":{"type":"MD5","value":"cc7dbbbd8cadd129addc3c3892bf850d"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","label":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13985337,"persistentId":"","filename":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":342581,"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","storageIdentifier":"s3://dvn-cloud-iqss:19e83cf00ae-86c7ab625190","rootDataFileId":-1,"md5":"47c1e55b334c0148892ef0d406b49021","checksum":{"type":"MD5","value":"47c1e55b334c0148892ef0d406b49021"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-12T16:59:30Z","fileAccessRequest":true}},{"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. The updated version provides a lever-action cam to facilitate securing and releasing the ligature from the mouthpiece and reed. The compressed file includes photos of the updated ligature; .3mf files for its parts; and .STP files for the parts.","label":"260530 FLAT-SLOT Cammed 260525 0.8 tapered 260109 adjustable ring ligature.zip","restricted":false,"version":1,"datasetVersionId":738592,"dataFile":{"id":13985274,"persistentId":"","filename":"260530 FLAT-SLOT Cammed 260525 0.8 tapered 260109 adjustable ring ligature.zip","contentType":"application/zip","friendlyType":"ZIP Archive","filesize":17342575,"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. The updated version provides a lever-action cam to facilitate securing and releasing the ligature from the mouthpiece and reed. 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It comprises supporting audio data and CAD data for 3D printing. A 3D-printed vortex-generating saxophone mouthpiece was previously developed for use with a synthetic reed. Further experiments were then conducted to vary the density of the mouthpiece, by altering wall thickness and infill; without changing the shape. These experimental mouthpieces were tested for playability, intonation and timbre. The heaviest and the lightest experimental mouthpieces were found unsatisfactory. A mouthpiece printed less dense than the original one (lighter overall, with thinner walls but more infill) was found highly suitable."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-02-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities","Engineering"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"saxophone"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"mouthpiece"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"3d 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This is the .3mf file for printing the new version.","label":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13466440,"persistentId":"","filename":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":698638,"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .3mf file for printing the new version.","storageIdentifier":"s3://dvn-cloud:19c715acdd6-4a93e1c60295","rootDataFileId":-1,"md5":"44734836d38e45399de03d8308c6581d","checksum":{"type":"MD5","value":"44734836d38e45399de03d8308c6581d"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","label":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13466441,"persistentId":"","filename":"260216 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315184,"description":"The previous version of the mouthpiece for use with synthetic reed has a thin wall (1mm) where the table meets the U-shaped curve of the facing cutout. That wall is delicate. In order to strengthen it, a new version was prepared which has a 1mm brace for reinforcement of that region (for a total thickness of 2mm). The new version affords greater stability. It is pitched higher than the previous version, which may be advantageous if a particular combination of mouthpiece and reed would otherwise need to be pushed further onto the cork than desirable. This new braced mouthpiece may be pulled further out on the cork than the previous version, while affording correct pitch and intonation. This is the .STL file with the design of the new version.","storageIdentifier":"s3://dvn-cloud:19c715c9927-301249944cc0","rootDataFileId":-1,"md5":"904f04bbaebde0719718737526014a54","checksum":{"type":"MD5","value":"904f04bbaebde0719718737526014a54"},"tabularData":false,"creationDate":"2026-02-18","publicationDate":"2026-02-18","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .3mf file.","label":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13577780,"persistentId":"","filename":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":691393,"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .3mf file.","storageIdentifier":"s3://dvn-cloud:19c9f04288c-85508e4dadb5","rootDataFileId":-1,"md5":"52f9f26a6e8aa5b3bc1b6716d41da7d5","checksum":{"type":"MD5","value":"52f9f26a6e8aa5b3bc1b6716d41da7d5"},"tabularData":false,"creationDate":"2026-02-27","publicationDate":"2026-02-27","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .STL file.","label":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13577779,"persistentId":"","filename":"260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2283784,"description":"This is a refined version of the previous braced mouthpiece, to facilitate smoother airflow. It is the currently preferred version. This is the .STL file.","storageIdentifier":"s3://dvn-cloud:19c9f029978-d2dda3ad10a6","rootDataFileId":-1,"md5":"025ea08fce1d8e5949aef5156bb93dd7","checksum":{"type":"MD5","value":"025ea08fce1d8e5949aef5156bb93dd7"},"tabularData":false,"creationDate":"2026-02-27","publicationDate":"2026-02-27","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the Bambu Studio .3mf file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13591908,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":692884,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the Bambu Studio .3mf file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb653a37-4d8ca1984c8f","rootDataFileId":-1,"md5":"4a6f083128b08903ef079bc7c4a10348","checksum":{"type":"MD5","value":"4a6f083128b08903ef079bc7c4a10348"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","label":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13591909,"persistentId":"","filename":"260307 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2289984,"description":"In previous MP files, the bore was slightly out of round at the end of the bore nearest the facing. This has been revised so that the MP bore is now cylindrical for its full length. This is the currently-preferred file for the vortex-generating MP; however, further updates may be made from time to time, so check back before printing. This is the .STL file.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb672c66-4a1f1b890200","rootDataFileId":-1,"md5":"916d799f9eda15934db5470b39abe3c2","checksum":{"type":"MD5","value":"916d799f9eda15934db5470b39abe3c2"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","label":"260307 tapered bore alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13591907,"persistentId":"","filename":"260307 tapered bore alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":697658,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the Bambu Studio.3mf file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb56a588-acea2e77e8b2","rootDataFileId":-1,"md5":"3d3d429ba2c9dba3ea77c0fbcb2612e8","checksum":{"type":"MD5","value":"3d3d429ba2c9dba3ea77c0fbcb2612e8"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","label":"260307 tapered bore alto MP.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13591906,"persistentId":"","filename":"260307 tapered bore alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":2315784,"description":"A further experiment was conducted to test whether it is the vanes added to the MP that are specifically responsible for its improved performance. A MP with a tapered bore comprising a flow restrictor of similar size to the vane assembly, but without having any vanes, was made and tested. Testing this MP, it does what one might expect: it impedes the airflow and therefore increases resistance to blowing. But that's all -- it does not play as easily or sound as nice as the vortex MP with vanes. This comparison test therefore additionally validates the hypothesis that providing angled vanes to create a vortex in the airflow confers advantage, by reason of that specific expedient. Note that this MP is not for ordinary use, it is just a test specimen for experimental comparison. Anyone who doubts the advantages of vanes, may print this MP and thereby make their own comparative assessment on similar MPs with and without vanes. This is the .STL file for the MP without vanes.","storageIdentifier":"s3://dvn-cloud-iqss:19ccb562547-682764c8f474","rootDataFileId":-1,"md5":"ae3c16f6cf17402d80cbb5d54c935058","checksum":{"type":"MD5","value":"ae3c16f6cf17402d80cbb5d54c935058"},"tabularData":false,"creationDate":"2026-03-07","publicationDate":"2026-03-07","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the .3mf file to accompany the related .stl file.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13631568,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137998,"description":"This is the .3mf file to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d2669b513-23a2f9453e72","rootDataFileId":-1,"md5":"4b2e7d1a5aee57d1554dacb7c7b91e7f","checksum":{"type":"MD5","value":"4b2e7d1a5aee57d1554dacb7c7b91e7f"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","label":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13631558,"persistentId":"","filename":"260324A 260310 faired 260223 braced scaled round sealed tip 260108 shorter alto standard B diamond-chamfered diverter.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":3844084,"description":"This is a further experimental update. The shank of this new mouthpiece is provided with flutes, similar to a Greek column. It appears to be a favorable shape for 3D printing -- although that's not what the ancient Greeks had in mind -- since the arched flutes provide convenient attachment points for a variety of infill paths. Concerning the mechanics of such columns, see e.g.: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-1305.2008.00516.x  \"Influence of Flutes on the Mechanical Behaviour of Ancient Greek Columns\". This mouthpiece was printed with 55% infill; and at lower temperature and speed than the default (for better quality, as was suggested by Bambu Lab's tech support). The exact settings are in the .3mf file.This is the .stl file. See the accompanying uploads for the .3mf file and a PDF containing images. As before, some hand finishing is required for use with synthetic reeds (220 & 600 grit wet emery cloth). Continue to check back for possible further updates on this research.","storageIdentifier":"s3://dvn-cloud-iqss:19d265cdd5e-d08af8fb8a97","rootDataFileId":-1,"md5":"269758d96bcc0e8dac34eaa645784bbc","checksum":{"type":"MD5","value":"269758d96bcc0e8dac34eaa645784bbc"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","label":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13644200,"persistentId":"","filename":"260324B 260310 faired 260223 braced scaled round sealed tip etc.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1428984,"description":"This is the .STL file for the new MP with tapered shank printed with gyroid infill (which was also published on April 3, 2026). If you cannot readily find the related .3mf file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54e16dc1-055c97f6f8b2","rootDataFileId":-1,"md5":"0af951ceb208b817e4445452aef23f4c","checksum":{"type":"MD5","value":"0af951ceb208b817e4445452aef23f4c"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the .PDF file with images to accompany the related .stl file.","label":"260325 images of fluted mouthpiece.pdf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13631647,"persistentId":"","filename":"260325 images of fluted mouthpiece.pdf","contentType":"application/pdf","friendlyType":"Adobe PDF","filesize":805440,"description":"This is the .PDF file with images to accompany the related .stl file.","storageIdentifier":"s3://dvn-cloud-iqss:19d26773bdd-47a3036e72fb","rootDataFileId":-1,"md5":"7f21422d1b9bbdce5244988a0a1e4230","checksum":{"type":"MD5","value":"7f21422d1b9bbdce5244988a0a1e4230"},"tabularData":false,"creationDate":"2026-03-25","publicationDate":"2026-03-26","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","label":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13640110,"persistentId":"","filename":"260331 33% infill long flutes with fillets @ default speed & temp 260324A.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1137126,"description":"This is another version of the fluted mouthpiece. It prints with 33% infill density rather than 55%; and at default temperature & speed. Timbre sounds richer in midrange. It has been tested with 2.25 and 2.5 Legere synthetic reeds. This is the .3mf file (.STL file and outside appearance of the mouthpiece are the same as before, since changes were only in the printing parameters).","storageIdentifier":"s3://dvn-cloud-iqss:19d49c1e707-cb74450c6ab4","rootDataFileId":-1,"md5":"48f4aa112f5398ca69d1fadc7daaf721","checksum":{"type":"MD5","value":"48f4aa112f5398ca69d1fadc7daaf721"},"tabularData":false,"creationDate":"2026-04-01","publicationDate":"2026-04-01","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","label":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13644184,"persistentId":"","filename":"260402 40% gyroid infill_drafted long flutes_ fillets_default s & t_260324B.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":443088,"description":"This MP was printed with 40% gyroid infill. It has 7% draft on the shank to create a tapered end. It plays loud; strong in the second octave; with rich midrange timbre but not excessive (it's controllable). Gyroid infill appears to be more flexible and hence more resonant than adaptive-cubic infill that was used previously. Generally, it appears advantageous to have resilience in the MP construction (not too stiff and not too sloppy (or it won't tune to pitch), but a bit springy w/ quick action); which is consistent with the previously-reported experimental findings concerning MP density. This is the .3mf file. The related .STL file is also posted April 3, 2026. If you cannot readily find that file, set your display of the file list to sort chronologically (rather than by file name).","storageIdentifier":"s3://dvn-cloud-iqss:19d54c1ff58-37db37371d24","rootDataFileId":-1,"md5":"b9f2a22633fb2d6b6961955bd13d9abe","checksum":{"type":"MD5","value":"b9f2a22633fb2d6b6961955bd13d9abe"},"tabularData":false,"creationDate":"2026-04-03","publicationDate":"2026-04-03","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","label":"260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13654159,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433718,"description":"This mouthpiece is similar to the version uploaded April 3, 2026, with minor revisions. The draft angle of the shank taper is 5.5 degrees. The top end of each flute is chamfered to reduce overhang when printing. The print setting not to cross the outer wall is enabled (on the advice of Bambu Labs tech support), which suppresses stringing within the flutes for better print quality. It has been tested with Legere French Cut 2.25 and 2.5 synthetic reeds; and works well with both. It is the currently-preferred version. This is the .3mf file. The .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19d68965679-f05234868506","rootDataFileId":-1,"md5":"4db86d6db33196e022c49d9093b34fdd","checksum":{"type":"MD5","value":"4db86d6db33196e022c49d9093b34fdd"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","label":"260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13654160,"persistentId":"","filename":"260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1412084,"description":"This is the .STL file that accompanies the .3mf file uploaded April 7, 2026.","storageIdentifier":"s3://dvn-cloud-iqss:19d689c96b3-dc24573f14c4","rootDataFileId":-1,"md5":"0c85f5f071cc25830671ce81d29cf3e0","checksum":{"type":"MD5","value":"0c85f5f071cc25830671ce81d29cf3e0"},"tabularData":false,"creationDate":"2026-04-07","publicationDate":"2026-04-07","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13818987,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":403519,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the Bambu Studio .3mf file. The corresponding .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19df56a67fa-42756390c81d","rootDataFileId":-1,"md5":"3e376d3e09a0da854849caa4c6fef3e0","checksum":{"type":"MD5","value":"3e376d3e09a0da854849caa4c6fef3e0"},"tabularData":false,"creationDate":"2026-05-04","publicationDate":"2026-05-04","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. The corresponding Bambu Studio .3mf file is also being uploaded.","label":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13819028,"persistentId":"","filename":"260501 tenor MP made from 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1259484,"description":"This is a tenor saxophone mouthpiece of a similar fluted design to the recently-uploaded alto saxophone mouthpiece. This is the .STL file. 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Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","label":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13917731,"persistentId":"","filename":"260518 adaptive cubic 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":433313,"description":"Previously-posted research was directed towards improvement in the mouthpiece for an inexpensive VINCI alto saxophone. Now testing has been conducted on a professional-quality Yanagisawa 992 alto. It was determined that the previously-preferred design (posted on this Dataverse) needed further optimization for use with the 992. The 40% gyroid infill was found to be too flexible. On the 992, the low D played stuffy and inconsistent. The design of the CAD file (.stl) remains unchanged, but the infill was changed in Bambu Studio to 33% adaptive cubic. Then the revised mouthpiece was tested on the 992 and found to play evenly across the range. The new .3mf file is now posted here. Continue to check for possible further updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19e50d80954-93f92f6af0e3","rootDataFileId":-1,"md5":"c53b2406578f7d569df0512845b25e71","checksum":{"type":"MD5","value":"c53b2406578f7d569df0512845b25e71"},"tabularData":false,"creationDate":"2026-05-22","publicationDate":"2026-05-22","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the 0.6\" wide tapered split-ring ligature which is particularly suitable for use with the mouthpiece design uploaded today (although it may also be used with other mouthpieces). This ligature must be provided with a cable tie to adjust its desired diameter, as previously described in connection with other such split-ring ligatures. Without a cable tie, the ligature is unable to apply sufficient pressure to hold the reed securely. Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. 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Using a cable tie, the effective diameter of the ligature can be reduced incrementally to apply appropriate pressure to the reed, precisely as may be desired. 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It plays strong over full range of high and low notes and has a fast response. The related .3mf file is also being uploaded.","label":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13985336,"persistentId":"","filename":"260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1056284,"description":"This is the .STL file for a thinner mouthpiece with a smaller chamber, in the style of a metal mouthpiece.  It plays strong over full range of high and low notes and has a fast response. 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","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13985278,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":412980,"description":"This is the .3mf file for an updated mouthpiece with narrower rails and a longer table. It uses 50% adaptive cubic infill, rather than 33%, which makes it brighter. The related .STL file is also being uploaded. ","storageIdentifier":"s3://dvn-cloud-iqss:19e83bf727d-92a741b1b93c","rootDataFileId":-1,"md5":"e4946b743ecc040c9c3dffc646352433","checksum":{"type":"MD5","value":"e4946b743ecc040c9c3dffc646352433"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","label":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13985287,"persistentId":"","filename":"260528 sg 260525 beveled tip NOT thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1284584,"description":"This is the .STL file to accompany the .3mf file uploaded today, for the mouthpiece with narrower rails, longer table, and revised infill.","storageIdentifier":"s3://dvn-cloud-iqss:19e83c488e7-b138270b964c","rootDataFileId":-1,"md5":"cc7dbbbd8cadd129addc3c3892bf850d","checksum":{"type":"MD5","value":"cc7dbbbd8cadd129addc3c3892bf850d"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","label":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13985337,"persistentId":"","filename":"260529 50% gyroid 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":342581,"description":"This is the .3mf file for the thinner mouthpiece in the style of a metal mouthpiece.","storageIdentifier":"s3://dvn-cloud-iqss:19e83cf00ae-86c7ab625190","rootDataFileId":-1,"md5":"47c1e55b334c0148892ef0d406b49021","checksum":{"type":"MD5","value":"47c1e55b334c0148892ef0d406b49021"},"tabularData":false,"creationDate":"2026-06-01","publicationDate":"2026-06-01","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is a compressed file containing data for an  updated version of the split-ring ligature used in previous mouthpiece experiments. 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The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. The bore diameter is reduced by 0.005\" for a tighter fit on the neck cork. The corresponding .STL file is also being uploaded.","label":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":14015801,"persistentId":"","filename":"260619 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":474281,"description":"This is a modification to the file uploaded on June 4, 2026. The number of directional vanes in the chamber is reduced to 4, for less resistance while still generating the beneficial effect of a vortex in the airflow. A higher baffle is provided. 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The number of directional vanes in the chamber is still 4; and a higher baffle is provided. The bore diameter is reduced by only 0.002\" (rather than 0.005\" as before) for a looser fit on the neck cork. Additionally, the tip opening is increased by about 0.007\". The corresponding new .STL file is also being uploaded.","label":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":14037289,"persistentId":"","filename":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":428531,"description":"This is a modification to the file uploaded on June 20, 2026. The number of directional vanes in the chamber is still 4; and a higher baffle is provided. The bore diameter is reduced by only 0.002\" (rather than 0.005\" as before) for a looser fit on the neck cork. Additionally, the tip opening is increased by about 0.007\". The corresponding new .STL file is also being uploaded.","storageIdentifier":"s3://dvn-cloud-iqss:19f18a9dd3e-559b4d5a9be4","rootDataFileId":-1,"md5":"b34426a90de424d283e2b0891cb96033","checksum":{"type":"MD5","value":"b34426a90de424d283e2b0891cb96033"},"tabularData":false,"creationDate":"2026-06-30","publicationDate":"2026-06-30","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the .STL file corresponding to the .3mf file uploaded today.","label":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":14037290,"persistentId":"","filename":"260629 260619 . . . sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1492884,"description":"This is the .STL file corresponding to the .3mf file uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f18b2bfc2-1d38af2ed881","rootDataFileId":-1,"md5":"f53eae3c2373cf99f7466a8f95923836","checksum":{"type":"MD5","value":"f53eae3c2373cf99f7466a8f95923836"},"tabularData":false,"creationDate":"2026-06-30","publicationDate":"2026-06-30","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the .STL file corresponding to the .3mf file uploaded today.","label":"260703 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":14055185,"persistentId":"","filename":"260703 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.stl","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":1371884,"description":"This is the .STL file corresponding to the .3mf file uploaded today.","storageIdentifier":"s3://dvn-cloud-iqss:19f2d5127c0-deadd7d0a8e0","rootDataFileId":-1,"md5":"b90628e364166d86b82cdf3bc74d02d4","checksum":{"type":"MD5","value":"b90628e364166d86b82cdf3bc74d02d4"},"tabularData":false,"creationDate":"2026-07-04","publicationDate":"2026-07-04","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This is the same as the file uploaded June 4, 2026, except the bore diameter is 0.638\" rather than 0.640\" (for a tighter fit on the neck cork). Infill density is the same 66% (3D-honeycomb pattern). Densities of 55% and 77% were also tested at this time, but 66% is preferred. The corresponding .STL file is also being uploaded. Continue to check back for updates from time to time.","label":"260703B 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":14055184,"persistentId":"","filename":"260703B 260604 260527 sg 260524 braced 260523 thin 260407 5.5 deg taper 260324B alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":408563,"description":"This is the same as the file uploaded June 4, 2026, except the bore diameter is 0.638\" rather than 0.640\" (for a tighter fit on the neck cork). Infill density is the same 66% (3D-honeycomb pattern). Densities of 55% and 77% were also tested at this time, but 66% is preferred. The corresponding .STL file is also being uploaded. Continue to check back for updates from time to time.","storageIdentifier":"s3://dvn-cloud-iqss:19f2d4dc3ce-6f828d7719e6","rootDataFileId":-1,"md5":"d973fd687179ddafec952cd1e91db605","checksum":{"type":"MD5","value":"d973fd687179ddafec952cd1e91db605"},"tabularData":false,"creationDate":"2026-07-04","publicationDate":"2026-07-04","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}},{"description":"This new version is 3% shorter in the chamber, but the bore and table were extended to compensate for the overall 3% length reduction. The vanes are cut into separate elements, to reduce the resistance in the chamber when airflow encounters the face of the vanes. Also radiused the front of the vanes, for same reason. Furthermore, the number of vanes is reduced by eliminating alternate positions so there are now only 5 vanes, which are spaced twice as far apart.  Works well when playing Royal 2.5 cane reed using 0.6\" wide tapered adjustable split-ring ligature. Corresponding .STL file is also being uploaded today; as well as files for the tapered ligature. As a reminder: hand-polish the table and facing of 3D-printed mouthpieces with wet emery cloth (200 and 600 grit) on a flat surface.\n","label":"260710 260708 alto MP.3mf","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":14064041,"persistentId":"","filename":"260710 260708 alto MP.3mf","contentType":"application/octet-stream","friendlyType":"Unknown","filesize":439424,"description":"This new version is 3% shorter in the chamber, but the bore and table were extended to compensate for the overall 3% length reduction. The vanes are cut into separate elements, to reduce the resistance in the chamber when airflow encounters the face of the vanes. Also radiused the front of the vanes, for same reason. Furthermore, the number of vanes is reduced by eliminating alternate positions so there are now only 5 vanes, which are spaced twice as far apart.  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Related .3mf and .STL files were uploaded April 3, 2026.","label":"PXL_20260404_120307862~3.jpg","restricted":false,"version":1,"datasetVersionId":738330,"dataFile":{"id":13645421,"persistentId":"","filename":"PXL_20260404_120307862~3.jpg","contentType":"image/jpeg","friendlyType":"JPEG Image","filesize":551491,"description":"This is a photo of the mouthpiece with tapered shank. Related .3mf and .STL files were uploaded April 3, 2026.","storageIdentifier":"s3://dvn-cloud-iqss:19d586ec7fc-d3d4f4361d35","rootDataFileId":-1,"md5":"754d499a4f8686c5ec5d73dbbbd743e0","checksum":{"type":"MD5","value":"754d499a4f8686c5ec5d73dbbbd743e0"},"tabularData":false,"creationDate":"2026-04-04","publicationDate":"2026-04-04","lastUpdateTime":"2026-07-10T22:09:14Z","fileAccessRequest":true}}]}]}