Ender 3 Filament Threader Guide

Ender 3 Filament Threader Guide for the Feeder, helps thread the filament into the feeder and reduce friction with the filament during feed and retraction. The friction was significant enough that a spool of PETG filament with ridges filed a vertical two mm long slot on the filament feed hole of my Ender 3 feeder black plastic block. It has a curved section where the filament threads in and a straight section where the filament threads out and enters the hole in the feeder black plastic block.