Smooth Widget Spinner 3D Print Model

Summary
A fidget Spinner that uses 3 1/2 in hex nuts in the sides and one 608ZZ ball bearing in the middle. Except this one, unlike http://www.thingiverse.com/thing:2300929, is smooth. If you know how to use OpenSCAD then you can make this yourself, if not, there are instructions but I thought I’d save some people the time.