Ender 3 Filament Guide
thingiverse
This ender 3 accessory slides into the side of the top extrusion on the ender 3. You put two ball bearings in the two joints and then put the two bearing caps on the bearings. You then put the filament in between the two wheels. This keeps the filament safe from being damaged by the z-axis bar or printer. This will prevent the filament from breaking when the filament is tangled in the spool.
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