Crunchy Coin magnet fidget key fob

A fidget toy key fob made by request for a friend. This one has the magnet pockets intentionally oversized so that the magnets move around in their pockets while fidgeting, making a kind of crunching sound as the top part is rotated.

There are two sizes, one with an overall diameter of 50mm, and a smaller one that is 40mm. 

You will need two 8x2mm round neodymium magnets and twelve 6x2mm round neodymium magnets for each fidget. The center magnets should be installed in the opposite polarity as the perimeter magnets. Because these are printed in their final orientation, there is no need to “flip” the magnets when installing them into the base or the coin parts. It's easiest to keep all the magnets in a single stack and put them into the pockets one at a time.

This will nor work well on a machine with a steel (or otherwise ferrous) nozzle. Brass is best, and no other ferrous/magnetic parts in the hot end, so that the magnets stay down in their pockets while the print resumes and covers them up.