Thingiverse

Fidget Spinner Gyroscope 12 1/2" inch balls

by W4YBO

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75 mm dia circular spinner with twelve holes at the rim for 1/2" chrome steel ball bearings (slingshot ammo). Standard 608 skate bearing (8x22x7mm). Scale as necessary for a tight press fit for the balls. Adhesive will throw off the balance. (Just a thought: You might even try 50 caliber lead balls used by muzzleloaders.)

Scale Bearing_Button_v1.stl to 99% so you don't have to press fit it. It's tough to remove the grips from the bearing printed full size.

Try printing with three peri

Source

Thingiverse

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