Fidget spinner build only with arcs.

Body was build using single polyhedron joining bottom-to-top profiles and custom poly-points inset algorithm.

Quick render (relatively) using OpenScad and high level of customization.

If u want original fidget spinner make sure that l1 = l2

Uploaded STL is a demo only. You must print 3 parts separately. Body, top cap + bottom cap.

Update 1: Added bhh parameter (Bearing handle height - distance between body and handle caps - default is 0.4) + fixed R188 preset tolerances (internal bearing dia and bearing height).