[tirwin]

Working with the techflex can be a little tricky at first. When you cut it, it has a real tendency to fray. Some people suggest using a hot knife or heating a razor knife with a propane torch. You're basically cutting and melting/sealing the ends at once.

I found it's just as easy to cut and then use a grill lighter to quickly melt the ends.

One resource that I found super helpful was the Car Audio Fabrication channel on YouTube. This guy does really nice videos and includes a lot of great tips.

Here's the one he did on techflex.