Very cool thread. I keep looking for uses for the 3D printer I have available. I'm trying to figure out the ball launch handle for A13, but can't find any pics of how the original was constructed.
I've got an Objet30 (polyjet) available. This material seems to be more rigid than an FDM part, but I' not sure, because I haven't seen both. Any chance anyone wants to try a side-by-side destructive test? I can supply the polyjet piece.