ROBOuroboros - infinite robot snake fidget

Prints in place, no supports needed. 

Parts are separated by around .4mm, so feel free to scale it up if you're concerned about tolerances (especially for silk PLAs which have a tendency to shrink when cooling). I wouldn’t scale it down unless you know your printer can handle <4mm tolerances. I've also included a single joint for test printing.

After printing, twist each joint gently until the inner parts come free. It will loosen up more as you play with it. Enjoy!