This jig helps with cutting replacement PTFE tubes for the P1P, P1S, and X1C nozzle wiper.

Requires 4mm OD, 2.5mm ID tubing: https://amzn.to/3PdKSP0

If the cut piece does not come out easily, there there is a hole at the back of the jig.

You can use the Bambu allen key to push the tube out. 

The nozzle wiper tubes will eventually wear out; even quicker when doing lots of multi-color prints.

Worn out tubes are much less efficient at cleaning the nozzle so replacing them should be part of regular maintenance.