Adapter for pneumatic fitting for bowden tube (e.g. from your filament dryer) that mounts on top of the original Prusa filament guide.
Adapter uses the “filament resting” holes on the filament guide as mounting holes for screws and it has its own “filament resting” holes.
UPDATE 2023-12-07:
Larger exit hole, filament slides better - files with “v2” at the end.
The author remixed this model.
Adds ability to mount bowden adapter (pneumatic fitting) onto the original filament guide.