Filament cleaner with jam sensor

Compact filament cleaner for mounting on a side of your printer, with holder of PTFE pipe and sensor for detection of jammed / ended filament.
For cleaning of filament I recommend to use part of sponge curlpapers (found in wife/girl/mother's cosmetics or to buy in any drugstore, if you don't want to risk ;) ), it has right diameter and useful axial hole ideal for filament.
For making a sensor you need some other things except printed body:
- 2x bearing 623 (3x10x4mm)
- 2x steel axle fi3mm