Idk it's weird lol when I've used it at 320 it would semi stick but not fully. And now that I've tried it with 330 and above it won't stick at all. And to be honest i don't know, I bought a white and black vinyl roll from world-paper.com just to test it out. Thats what i've been using.
However I am doing it with out a teflon sheet. Could that be my issue? I didn't think one was necessary.