M6 Funnel Nut

I had the issue that my P1S sometimes pulled the PTFE Tube out of the rubber tube. So I put a PTFE Coupler on the end of the tube to prevent this. This funnel helps to guide the filament into the Coupler and PTFE Tube so that the filament does not scratch on the edge of the coupler.

It is designed in such way, that the M6 Thread is cut into the plastic when you screw it onto a PC4 Coupler.