A few years ago a careless helper dropped the tailgate before the chains were connected, chunking a nice deep matching pair of gouges in the powder coated rear bumper. Since I forgot to take any before pictures, here’s a couple of older images highlighting the damaged areas:
Fortunately the powder coat is really thick, so I was able to sand out most of the damage starting with 320 wet up through 1500 grit, after which I hit it with the body buffer. The first pass was done with a wool pad and 3M Perfect It rubbing compound, followed by 3M foam pad polishing glaze.
For not having put more than an hour’s effort into it, the bumper turned out looking pretty darn good. At least the gouges are gone and it looks shiny again. Here’s a lousy picture taken late at night.