The manufacture of instruments is made with 3D printers and enable anyone to produce the desired instrument. (a valve trumpet is estimated at 40€/$55 maximum of plastic).
I have already made a model of natural trumpet which will be extended to the manufacture of all the brass of this family with the possibility of recreating historical instruments, instruments uncommon while still maintaining a certain quality ( because it is based on an instrument generator using acoustic formulas, the rest being based on a test / error method).
This trumpet is available with 4 different shapes for now.
I also appeal for donations to fund the development of instruments. Another way to participate in this project and help me bring this project by spreading your contacts.