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Good luck with that. A good surface finish can be obtained with a carefully worked female form.
I have experimented with, but not bough a good quantity of PolyMetal. It's like a metal/plastic plywood; equivalent to 5/8" ply but with 1/10th the weight. I have sheared, rolled and braked PolyMetal by hand (18" lever arm). Right now I'm working on a fastener detail, but I need to get a router repaired. I see the joining done with an H-channel strip glued and/or riveted along a simple curved edge of adjacent rolled sections.
Peel the protective paper off and you have a prefinished enameled aluminum skin. I really want to build a teardrop trailer this way.
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