Wow Jim. I stand corrected then. If I ever do another one, I'll have to try your method. Does it remove the paint also or just the undercoating? Thanks.
Just the undercoating, I went after it with a media blaster afterwards. Note here my cars have all been Az cars where the undercoating get cooked and dried out more than most any other places so that may make this method work so well. I have been wondering about that. I see a few other here have used the scaler as well. I know a couple people tried it after I suggested it and they thought it worked great. Note that it can leave small dimples in the metal if you are not careful (notice I try to hold it at a 45 degree angle not straight on, which works way better BTW). If this was a rare high end car I may not do it this way but for your average restoration you would never notice it.
