Filament guide and filter for Prusa i3 6mm frame

Works with http://www.thingiverse.com/thing:810552 as it lines your filament over your extruder perfectly on a Folger Tech i3. It has just enough flex to keep the filament snug. Print laying on its side. Might work better printed in ABS to give it the flex it needs.

I cut out 2 pieces of a regular kitchen sponge and layered them into the filter.