This is a redesign of the Parametric Mouthpiece 2.1 using the same basic dimensions and layout. I changed the shape of the inner and outer cup cross sections to be true curves rather than 4-segment piecewise linear approximations. I reduced the thickness of the cup bottom by 1/4. I added a smooth fillet where the outside of the cup meets the shank, in order to reduce the amount of overhang and thereby prevent failed prints due to the nozzle catching a curled edge and tipping the work piece off the bed.

I implemented it in Fusion 360, which unfortunately cannot export models with adjustable parameters. So it is presented here as a Fusion 360 file. To edit the parameters, open the "Change" menu and select "Change Parameters." They work the same as in the Parametric Mouthpiece 2.1 model.

The starting parameters are for a close approximation of a Bach 12C trombone/baritone mouthpiece, but with a shank sized for the 10mm receiver on the Nuvo jHorn.

Prusa

I3 MK3S

No

No

0.10mm layers

60%

I have printed these in PLA and PETG, usually with 0.1mm layer height. Other materials might work.

I get best results by sanding the rim and inside of the cup using coarse grit sandpaper, then 220 grit.

For a smooth finish I apply Rustoleum Triple-Thick Glaze after sanding. This has worked well so far but I can't attest to the long term durability.