Filament dust cleaner

Just another filament cleaner.

Keep the filament dust away from the hotend.

An additional part you need is a little piece of foam of 10mm thick.

Print the cleaner. (Don't need supports)

Cut a piece of foam as a circle slightly larger than the radius of the piece.

Put the foam into the ring an use a cutter to cut the foam to the center.

That's all. You do not need to remove the filament to put the filter.