Spool Center Insert, 52mm Outside Dia. 32mm Inside Dia.

Spool Center Insert, 52mm Outside Dia. 32mm Inside Dia.

thingiverse

Engineers created an insert for 3D filament spools that have a center hole diameter of 52 mm or less, reducing it to a diameter of 32mm to allow effortless rotation on a standard spool holder. - Designed specifically to work seamlessly with the stock Ender 3 spool holder.

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