Compact Filament Runout Sensor

I drew inspiration from the model I linked in the remix section

Started from scratch for my own switch and made a mount for PTFE tube.

The pneumatic fitting has 10mm of  PTFE tube sticking out for a better guide.

I also made the switch press fit and the whole enclousure is held together by 2 zip ties.

Fits great with my other model https://www.printables.com/model/309646-creality-ender-extruder-ptfe-mount