This object was made in Tinkercad. https://www.tinkercad.com/things/6A29bUlPhVq

GET THE FULL MODEL OF THIS FIDGET SPINNER WITH ARENA-DOCK HERE AND OTHER FUN READY TO PRINT 3D MODELS HERE!

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I made the arena-dock so you're able to place the spinner into the slot on top giving you a flat surface so you're able to press fit the 1 bearing in the center and the pennies (5 in ea) into the 3 outer holes as for the spinner is oddly shaped. It also give's you a place to store the spinner when you're not playing with it and also by flipping the dock over it also doubles as the "arena" giving you a place for spinning the spinner.

Thank you & Enjoy!