F623ZZ Flange Bearing to 624 bearing adapter
thingiverse
It took a mere 30 seconds to craft this straightforward little gadget. I was determined to create a string winder and didn't have any 624 bearings on hand, but fortunately I had several extra F623ZZ flange bearings leftover from my D-Bot build. This simple adapter simply modifies the F623ZZ bearings to fit snugly into the 624 bearing hole.
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