Threaded 1.75 mm Filament Filter for Prusa i3 Mk3 Z-Tops with Reverse Bowden Mount Option

Threaded filament filter for use with Prusa i3 Mk3 Z-Tops with Reverse Bowden Mount Option.

https://www.thingiverse.com/thing:2825557

I cut a couple of sponge rings and pierced the centers on the one that I had built.