Guide and filter Filament for Tinyboy 3D printer

Because it is never good to have dirty filament, this is a guide and filter for 1,75mm filament.
Spécialy made for TinyBoy 3d printer and to be used with this filament holder : http://www.thingiverse.com/thing:957550

Just add a foam for cleanning the filament, and close the hood.