The file 'Spinning Double Ball Bearings 3D Printer Model' is (stl) file type, size is 901.38 KB.
After printing a few spinning gears and ball bearings, I thought why not combine them together to make a toy? The gear part was then modified to look like a saw blade so it looks meaner.
Not really sure if this classifies as a toy, but I've used them as coasters before and they worked great!
Ball_Bearings_21_balls_83mm.stl |