Do you really mean "bend" or do you want to "dome" the piece?
If you want a 2 or 3 inch high "dome", lay the piece on a flat hard
surface, like an anvil and just start hammering in ever increasing circles,
from the center of the piece with a slightly rounded hammer and the piece
will start to dome. More ever increasing circles = more doming, until or
unless the material work hardens to the point where it starts to crack. I
don't know that alloy very well, but if you can anneal it now and then, you
can keep going.

A farrier's hammer would be a good one to use. A ball pein hammer has too
much rounding and will simply make a bunch of little round dents. Even
those dents will work, but the result will not be pretty.

If you are not making a lot of these, assuming that "doming" is what you
want to do, call around to body shops to find someone with an English wheel
and ask if you can get a lesson or two and then rent it. Slower, but
pretty.

Pete Stanaitis
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