Tekstrend Bowden Extruder - (A.K.A.Yet Another Wade's Extruder Remix)

It is a work-in-progress!!

I decided to redesign the Wade's Greg's Extruder to add a filament runout sensor and a filament filter (A.K.A. oiler).
As it can be seen in the section analysis, the filament enters the extruder through the filament filter - located on the bottom of the extruder - and then passes through the sensor chamber triggering the switch. Once it has reached the hobbed bolt, it is then pushed into the PTFE tube.
There's still room for a jam sensor (in future). Suggest