I used to do a LOT of model building. Got out of it (mostly) in the early 90's. I was working on a Pro Street 37 Ford and wanted to make some aluminum wheel tubs for it so, this is what I came up with.
A pic of the car with the tubs installed. This is 1/24th scale.
This is the very simple hammer form buck I came up with.
Turned it up on the lathe...
With the hose clamp it really holds a strip of .010 thick aluminum tightly.
Continued next post.