I don't know how you use that cold heat soldering gun. I do know how to solder, but not with this thing. I got 1 at costco for 20 bucks...came with the wire stripper. This thing sucks...don't buy one if you planning. It has a built in light, but when you use the soldering iron, the light flickers making it almost impossible to see. And the tip...you gotta place this thing exactly right or it won't work...the tip is too big. Oh and the wire stripper....sometimes it doesn't do it right...and for small wire it just cuts it.

Who wants to buy mine....I'll sell it for 10 dollars. I hope I find my regular soldering iron...it's packed up in a box somewhere during a move.