Thanks I was wondering because this car was a one owner car when I got it, I bought it off a little old lady that bought it brand new and it was completely original when I got it and I ddidn' think grandma would have been under the car sprrsing undercoat! And I know I didnt! Haha
If I clean it good with soap and water do you think paint would stick to it? I dont want to take the time and effort to remove it!
Good progress! I've had pretty good luck solvent wiping with mineral spirits and top coating with flat black. If it’s sticking I'd only remove it where you are going to weld. Touch up with the rattle can stuff.