Filament Guide

thingiverse

I tweaked Matt's design, beefing it up for extra stiffness by making it thicker. To make it easier to insert filament, I lengthened the ring and added a diagonal slot. Initially, I had a vertical slot, but the filament would occasionally slip out of the ring. I relocated the main support rail to the right side of the grip-rectangle because it was too close to my Z-Axis wheel knob. I stretched out the right side of the grip-rectangle to reach all the way to the front edge of the top rail. On my Ender 3 Pro, the mounting screws for the filament spool holder prevented the grip-rectangle from sitting flush with the top rail, so I added a small step down on the rail and used plastic ties to keep it in place.