Motorized rotation stage

A simple motorized stage for low force applications (esp. laser machining).

This was intended for spinning a hardened tantalum tube with focused Nd:YAG laser (500mJ).

Additional, non-printed parts:
AndyMark NeveRest 40 gear motor
10.4" circle MXL timing belt 104MXL012 (McMaster number: 7887K23)
1/2" x 2" shaft
2x 1/2" ID, 1.125" OD bearing (McMaster number: 60355K505)
1/4"-20 screws and nuts for turntable
(Optional) Bearings on a 1/4"-20 bolt for tensioning