I bought these to fix up the mess on the roof of my 63 dart. (I bought the bigger kit which came with large and small disc). Took a bit to get a feel for how to use it but they work great once you get used to it. I've never attempted to shrink metal before and my roof came out pretty good in my opinion. Only needed a thin skim coat when I was done.
Car is looking really good. Always nice when you start with a solid platform.
