which is better to use to absorb the heat from tig welding? anti heat compound, part number 31042 or coldshield thermal paste, part number 13904. Is one or the other reusable? Which one or both? I’m putting the bottom half of a door on a 54 chevy, it’s been done before to the point of fatigue, I have it fairly well straight but even the least amount of heat moves it and I can’t get behind it enough. l Don’t want to put the whole skin on from window level down.