Universal Filament filter

thingiverse

Easy to print device which protects your filament from most common issues such as dust and friction. You can insert a sponge between each end and also put a few drops of oil (such as mineral oil) The sponge will help keep away dust particles and also prevent clogging of the extruder. The oil helps pass the filament through easier and also helps lesson the strain on the extruder motor. The two ends fit pretty snug together. Enjoy!