Ender 3 Compact Filament Roller Guide

thingiverse

There are 2 versions available, one utilizing a 608zz (skateboard) bearing and another employing a 606zz bearing. The 606zz is slightly smaller and I've installed it on my machine. It's also easier to install because the bearing doesn't block access to the screws as badly, allowing for installation and removal with the guide fully assembled. The bearing roller and pin are pressed in place and should be snug enough not to require glue; however, this will likely depend on your print settings. To install the guide, use the two screws holding the lead screw nut to the extruder bracket. Remove only one screw at a time to avoid disturbing the two lock nuts between the nut and the frame. Place the lock nuts that were under the screw head above the base, still just below the screw head. Once you have the first screw installed, remove the second screw, pivot the bracket into place, and reattach the screw.