PTFE cutter

thingiverse

I was examining the hotend PTFE mod from https://www.thingiverse.com/thing:3203831, intending to create a universal PTFE cutter because I don't know the precise length for my setup. So, I created a cutter on a slider with length markings on its side. The blade slot is designed for a utility knife blade (0.5mm), which is common in the US. I highly recommend using a mini clamp or drilling a small screw hole on the side and securing it with a screw to lock it in place while cutting it. Additionally, I believe it's better not to cut all the way down - instead, only cut about 1mm with the thin blade tip. The thicker blade body will push out the tube when cutting all the way down to the bottom side, resulting in an uneven cut. Cutting it with four or more cuts, or spinning the tube around the blade tip, yields a better result.