While digging through my pile of parts, I found that I did not have a good outside mirror. So I decided to try and see if I could bring one of the damaged mirrors back to life. I picked one that had a major crease on the backside and a couple of small dents. Using a hammer and a blunt chisel I was able to open up the outer fold that holds the mirror in place enough to get the mirror apart. After some hammer and dolly work, a file to knock down the high spots it started to look OK. Some sanding, a bunch of power buffing and polishing and it looks good. Slowly folding the lip back over the mirror with a body hammer and it is ready to use.