Ender 3 Filament Guide

thingiverse

Here's my take on solving the filament path / tension issue on my Ender 3. I noticed that some of my prints had diagonal lines on the top layers as the extruder was struggling to pull filament into the feed hole at a consistent pace, causing under extrusion issues of 10% or 15%. When there was tension, the extruder's performance suffered. I came up with this design to address problems I found in mounting the other "2020" filament guide on my X gantry. The bungs broke almost immediately since I printed the parts in PLA. This version slides over the top of your spool holder (the metal part), eliminating the need for additional fasteners. Simply un-screw one of the nuts holding the roller to the metal piece and slide this guide over top, ensuring a tight fit that keeps it from wobbling around. The straight part should rest on the top of your frame, making for a much smaller profile piece. This part works great with an extruder intake guide like the one I've linked: https://www.thingiverse.com/thing:2873157