There are a plethora of uses for for 3d printing like what is done at TechShop.ws.
So I work at locally owned music store in San Jose. Everything from mouthpieces and reeds to trombones and some saxophones have already been made from plastic in a similar fashion. I'm hoping to sell better quality, Locally Made, musicking gear to make a living and bring the cost down on sounding great in band.
Step 1: The Tech Shop
The Tech Shop has 3d Printing in plastic, molds, and a 3d Scanner. Really I'd love to scan a vintage Conn Alto Saxophone from the 1920's. There's also a mill and welder.
Step 2: Made a Mouthpiece With Ease
With help, I've 3D printed an Alto Sax Mouthpiece!