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03-20-2008 06:44 AM #5
If I am understanding your question correctly, I would use a Bead Roller with a Tipping wheel-it is basically a upper wheel that looks like a disc with a relatively sharp edge, and the lower wheel will have a "v" in it (obviously the disc fits in the "v" of the wheel)-this will start your edge, then you will use a Hammer and Dolly to finish the "fold over"-you will have to shrink the corners, either mechanically (with a Lancaster shrinker), or use the "tuck" method (essentially making small ruffles in the Metal, then collapsing them on themselves thereby shrinking it).
the other method would be to make a Hammer Form of the lid and form the edge over it-you will have to make an upper and lower piece (usualy made from MDF) and put some locating pins in the panel (which can be later welded shut), and clamp, clamp, clamp-if it moves during the operation you will lose your good edge. Then, using a mallett (I prefer wood, then a Slapper (Metal), slowly start forming the edge over the Hammer Form-you will more than likely have to use heat to shrink the corners, and slowly work your way around it-it will probably still need some Hammer and Dolly work to finish, but this will work also-
Personally, I would use the tipping wheel if it were me-much more controllable-
As for the cutoff wheel, I would not do it-it is too hard to control and all you will end up with is a weakened panel.Last edited by 35WINDOW; 03-20-2008 at 06:56 AM.





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