Extruder filament guide with roller - Ender 3

thingiverse

An extruder filament guide with a roller for even smoother filament feed. Designed for the Ender 3, easily plugs on to the extruder holder plate. Keeps the filament from grinding into the extruder plastic, smoothens feed and ensures a clearance from the Z lead screw. Prints in 3 parts, extremely easy to assemble. Has two variants, axis with and without the arm ensuring filament stays in place (even with it filament can be plugged in/out manually with medium force). Slight protrusions where the roller touches sides ensure small clearance of the roller from the base and smooth rolling; slightly sanding roller edges is still useful, but not required. Do not push the axis in too tight, the roller should freely rotate without any friction while not having room to wobble. Works best together with https://www.thingiverse.com/thing:3095575