With any poly or nylon rope lay it across a piece of scrap wood where you want it cut. I use a piece of metal J chanel about 12" long. At one end I heat the long side of the J with a propane torch, just the last few inches. Get it real hot then use it to melt the rope through. It seals the ends but doesn't make that big glob on the end like a lighter does. It's like a hot knife at the hardware store. Any thin piece of metal should work.