I designed this to be like a thing in welding we call a marshmallow, or "lube-matic" for proper terms. Simply take a paper towel, cotton round, or cotton ball, wrap it around the filament (not too tight) and place the clamp around it. It should work by keeping debris and other material out of your extruder head and stop your nozzle from getting clogged for longer. Maybe it works, maybe it doesn't. But I have been using a paper towel with a twist tie to secure a paper towel around my filament for some time now.

Hope this helps someone...

Happy printing!!!