608ZB Bearing Filament Spool Roller
thingiverse
I had some modified 608ZB bearings on hand instead of the standard kind, so I adapted this spool to accommodate an extra integral spacer that comes with the 608ZB model. This revised design should work its way up through the remix chain for other versions of this part, but I cannot confirm that as I derived my part directly from the source listed here. It appeared that the spool could be about 3mm longer to match the bearings, so I simply pushed them out to fill the gap.
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