Filament Holder & Dust Remover

Here is a basic filament holder and dust remover combo. I designed it to fit on top of my Aluminum Mendel, but it could be attached to virtually any printer (especially ones with aluminum extrusions).

I cut a basic sponge to size and then poked a hole in it that lined up with the hole in the part. The filament runs smoothly through the sponge and filament guide hole.

After a few test runs it seems to be doing its job, but I would love to hear your feedback.

UPDATE:

I noticed that the