Ender 3 Plastic Ball Bearing Filament Roller
thingiverse
Sneakyninjapants, I encountered an issue with the 3D file and S3D was dividing up the two separate bodies in the .OBJ file. This has been merged and re-saved as a .STL. I printed at 30% infill and 3 perimeters/walls, along with top and bottom solid layers set to 3. You will also need 2 x 608ZZ bearings if you want to use plastic printed ones; these are great options. Check out https://www.thingiverse.com/thing:2746804 for a reliable source. I printed the standard version but found them to be slightly too loose, so it might be worth trying the slightly tighter ones instead. Print at 0.1mm resolution with 100% infill.
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