This jig will hold the Bambu 4mm OD PTFE tubing, align it perfectly and prevent it from deforming while cutting with a razor blade.
There is an inset for a 5x3mm magnet.
I printed the body in Tough PLA since I thought it might hold up better to the razor blade, but I'm sure regular PLA is fine. For ascetics, I printed the inner shell in a different color but that is absolutely not required.
The author marked this model as their own original creation.