3d printer filament wipe

thingiverse

Insert a compact piece of PTFE tubing into the 4mm hole located on the pre-extruder. Feed your filament from the large open end through the PTFE tube and into the extruder. Once loaded with filament, fill the large opening with sponge or tissue to prevent debris buildup. Regularly inspect and replace the sponge every few prints to maintain optimal performance. This design aims to minimize atmospheric dust and debris entry points into the throat, extruder assembly, and nozzle.