I've never tried it, but I have a targa to experiment with (but no money for dry ice :lol: ). IIRC you are supposed to leave it out in the sun while doing this. It probably works with minor dents, but I honestly don't know.
usually things like that work as long as the dent doesnt have a demple to it or an actual crease, now what i am trying to say? say you lean on the side of a car, the panel kinda pops in, no crease just a gradual slope in, a lot of times you can get behind the dent and pop it back out. when you get a dent you stretch the metal, well heat seperates the molecules in metal while cold brings them together. if you get it cold you should be able to draw the metal back into shape. might work on certain dents, the paintless dent repaire people are usually pretty good atthat stuff
I've seen this done with CO2 spray also. Anyone know where I can get some of that? I have a dent in my rear panel. A kid from my church slammed a car door into it, so I need to give this a shot. It looks like it works better with the spray, but I don't know where to pick it up.
If you're interested you can see it work on YouTube.
Don't know if a CO2 canister will help because it needs to be sprayed on the dent. Can't do that with a canister as far as I know. That's why I'm looking for a spray can. I know they make them. Just haven't found them yet.