ShowYourNuts Fidget Spinner

Fidget spinner using 5/16-18 nuts (or M8 could possibly fit) and the typical 608 ZZ skate bearing in the center. Goal was for an easy-to-print spinner that had plenty of weight, using the much cheaper nuts so only the one center bearing is required for each one you build (I am building several of these and did not want to spend very much). I figured adding the small window to show just a triangular section of the nuts would give it a unique and eye-catching design, and I like how it turned out. The sweeping curved surfaces give it a shape that is very comfortable in the hand.

File is for one half that you print two of, so they clam-shell together trapping the bearing and nuts inside. It is recommended to then glue this together to avoid the risk of rapid unplanned disassembly.

The dimensions of this spinner are 3.375" diameter, 0.5" thick once assembled (each half 0.25" thick). I have been printing these from PLA at 30% infill using supports, and the results have been very good. This will need grip caps for the center bearing, which I have not yet designed, but there are many other designs on here with suitable center caps that could be used.

If you build one please be sure to share pictures of your results! Thanks.