608 Bearing Roller
thingiverse
Uploaded a customizable version of the roller here: https://www.thingiverse.com/thing:3421224. I used this filament box to feed directly into my printer through the PTFE tubing that connects to it, available at https://www.thingiverse.com/thing:2806474. Some issues arose with more abrasive filaments and lower-quality spools featuring higher variance in diameter. To address these problems, I designed rollers using the existing setup but providing a bit less resistance on the extruder's stepper motor and gears. This design was created in OpenSCAD, so if anyone wants to use a bearing with different dimensions, please share those dimensions in the comments, and I'll post another version accordingly.
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