This is a small tool that can cut out 11.3mm PTFE tubes. The blade is inserted from the upper chamfer gap. What is cut out from the front is the PTFE tube that can be used for nozzle wiping. I also used a silicone tube (outer diameter 4mm, inner diameter 2.5mm). The effect of replacing PTFE with silicone is also OK.

Blades with a thickness within 0.4mm can be used. Be careful with the blade during use.