Filament Guide for 20mm extrusion (Ender 3 variants)

This is a filament guide I made for printing with an external spool holder. It fits on my Ender 3 V2 and is compatible with any 20x20mm extrusion. 

This part prevents your gantry from pulling the filament and unrolling the spool while moving in the x direction, if you're feeding from the side like me.

For the best looks, I recommend printing it with no top or bottom layers and 10% triangular or hexagonal infill. The part is designed to be printed without any supports.