A 3D printable trombone. large bore, 8.5 inch. The bell fits a Bach 42 or 50 slide, or the included slide.
Parameterized design that can easily be changed into any trombone bell profile.
The bell takes about 30 hours of print time on an original Prusa i3 MK2. It can most likely be printed faster with a 0.6mm or 0.8mm nozzle. The slide takes about 8-12 hours print time.