Customizable Universal Fidget Spinner

Customizable fidget spinner for all sizes of bearings/weights. Can accommodate both cylinders and spheres as weights.

When using balls as weights, you must print in halves and glue together in order to insert the balls. Most slicers will allow you to do this by translating the model in Z below the bed by half the print height; anything below the bed plane will not be printed.

Add about .3mm to the diameter of any sphere weights to allow the printed halves to join easily. No clearance is necessary for cylinder weights (bearings), although that will make for an extremely tight fit.

For any OpenSCAD nerds, check out the code for an example of a three circle Apollonius function.