I'm buying a 1/2 ton utility trailer, dunno the manufacturer but it was purchased new in 1948 through Sears. It has straight sides, not the dog-legged Bantam sides, and the fenders are more like wheel pants than the simple arch Bantam ones. Nice little thing that need a little work and paint to be presentable.
The fenders have a couple of palm-sized dings in them and I'd like to pop them back out and do the bare-minimum of filler, but I've never done any metal-shaping body work. A poke around the web turned up a few sites that briefly discuss "off-dolly hammering," which seems to be the technique that I'll need -- hold the dolly as an anvil on the back of the dent and hammer around it until the dent comes forward. I know what the tools look like, I've just never used them. Anyone want to offer a bit more detail, like how hard to hit, how far apart to space hammer blows, how to know when to use the dolly as an anvil, that sort of thing?