Ender 3 Ball Bearing Filament Guide
thingiverse
This thing will guide filament smoothly into the extruder of your Ender 3 with the help of a ball bearing. Hardware - 608 bearing (oiled instead of greased will spin more freely) - 5/16 or 8mm bolt and nut (or printed substitute) - 2 printed spacers to keep the outer bearing race free
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