Toys & mechanisms

Flexi Snake — print-in-place articulated fidget that coils

A print-in-place snake that prints in one piece, no supports, and coils into a full spiral in your hand. 16 necked vertebrae on captive ball-and-stalk joints, each folding 50-70 degrees, plus a carved head with eyes and scale rings. Fully parametric: dial the number of segments and their length right in the .scad.