Ender 3 filament guide with printed roller and shaft. Prevents sharp angles of the filament as it enters the extruder.
Best result with a normal m5 bolt/nut combo, but included a printed shaft if you're desperate
Print using 40% fill, 15 count brim and 2mm BED supports for best results
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/5B9e64VxKt9