Fidget Spinner - 3 arm with bearings
thingiverse
My son requested a fidget spinner and I had some 8.5 mm steel balls available, so I created this for him. I split it into two halves to secure the balls inside instead of making them easily removable. Glue these halves together carefully. A standard 608RS bearing is required for assembly. He also wanted a slim button in the middle with a domed shape to balance on his finger. When printing, you may need to adjust the STL so that the outer part of the fidget spinner aligns with the base plate. For the button, print it slowly and use a brim for stability.
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