Fidget Spinner- Bolt Spinner

thingiverse

This fidget spinner can be printed on demand, requiring no components or assembly whatsoever. Just print it, give it a quick clean, and start spinning - oil is optional but helpful. Keep in mind that this isn't made of metal, so its spinning speed will naturally be slower than a traditional metal spinner. Attention: For optimal performance, set the printer to high fill settings when printing the ball bearings, as they work best when solidly filled.