I would get it close to the shape with what ever process that you choose, like your sample, then make a set of dies for the Pullman to sharpen the creases and define the shape. I would not be concerned with the shape of the outer flange at that point since it is wrapper around more than 90 degrees. Probably could finish that by hand, or a second set of dies made for a second operation.
Steve
__________________
Steve Hamilton
Hamilton Classics
Auto Restoration & Metalshaping
|