Bearing-to-HexNut Adapter
thingiverse
Have a favorite fidget spinner but not enough skate bearings to fill all the holes? This simple gadget converts your all-bearing spinner into one that uses hex nuts for perimeter inertial weights. Add some variety to your spinner by printing these adapters in different filament colors. Print Settings: Printer: Monoprice Mini Select Rafts: No Supports: No Resolution: 0.2mm Infill: 20%, although 100% will add even more weight Notes: If your nut's fit is extra snug, I recommend pushing the adapter into the spinner first, then tapping the nut in with a hammer.
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