Universal Filament filter

thingiverse

Easier printer accessory that safeguards your filament from prevalent problems such as dust and friction. You can insert a sponge between each end, and also apply several drops of oil (like mineral oil). The sponge will keep dust particles at bay and prevent extruder clogging. Oil makes it easier for the filament to pass through and reduces strain on the extruder motor. The two ends fit together tightly.