do you know any sheet metal workers or anyone whos got a folder, you could do it in a vice at a push no need to be stainless and 18/20swg a be ok.
I might invest in a bender (ooh err). But I'm nearing the end of the welding on my resto so seems a bit late now. Ive done the majority of my stuff in the vice, but you always end up with hammer marks in the steel, and its never 100% straight :/ But then again a vice mounted bender is only £50. So might be able to con the old man into getting one. Haha