Non-jamming filament sensor housing. Fits the original switch, just replace the plastic case. Tight fit, no screw or glue required. Push the PTFE tube about 5mm into the hole at the top.
May fit to other printers, but the mounting holes are not through holes, they are only 3mm deep on both sides!
(V400) Printing instructions:
The author marked this model as their own original creation.