Ender 3 - Filament spool holder upgrade

thingiverse

When printing with my Ender 3, I often notice that the Filament holder nut tends to turn and lock itself down on the filament side while extruding, resulting in excessive tension on the Extruder stepper motor and even causing filament skipping. To resolve this issue, I created a custom filament holder positioned on the printer side, featuring a printed retaining ring. On the filament side, I designed a simple edge that prevents the filament from falling down. This modification effectively addresses the problem for me. I hope you find this solution helpful - cheers!