Extruder filament guide with roller - Ender 3

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. The axis can be lubricated with some teflon-based lubricant or similar for extended lifetime (works well more than a year this way so far). You can slightly sand the wheel groove so the wheel really rotates with the filament, not just slipping by.

There is a shorter variant for cases when you're using a top filament guide too (the original longer one might collide with it above 20+cm Z). Only the arm is different, the rest remains.

Works best together with https://www.thingiverse.com/thing:3095575

Print Settings

Printer Brand:

Creality

Printer:

Rafts:

No

Supports:

Resolution:

0.1-0.2

Infill:

Filament: Filament-PM Best with PETG or similar, PLA would creep and loosen over time.