Here are some models I designed for 3D printing. They’re simplified such as to not need support or extra adhesion in general. I’ve printed them out on PLA with a 0.4 mm nozzle.

If using them, give credit.

Mayall telescope

Model of the Nicholas Mayall telescope, at Kitt Peak, Arizona, where DESI is installed.

Files: mayall.blend, mayall-body.stl, mayall-dome.stl

DESI’s focal plane

Model of DESI’s focal plane.

Files: focal-plane.blend, focal-plane.stl