Unless you beat the aluminum into submission, it shouldn't crack anyhow. If it
does, you can TIG weld it, or gas weld it using flux coated aluminum welding
rod made for this purpose. Normally, in hand forming aluminum, it is worked
until it is hard (resists stretching), and then it is annealed again. Remember
all those old Ferrari's and AC Cobra's? They were many aluminum panels beat to
shape and gas welded together.
Happy panel beating.
bdk
DOConnor@zoomit.sikorsky.com wrote:
> >Aluminum will harden as it is worked,...As the dent was worked out, the
> >aluminum hardened to the point it was virtually impossible to totally
> >smooth it out....
>
> The "trick" commonly used here at Sikorsky in this situation is to have the
> part heat treated to soften it back to "T0" or "T5" condition, work the
> problems out, re-harden to "T6", and straighten, if necessary, by hand to
> fix any warpage from heat treat. If you get hooked up with a good aircraft
> repair shop they should be able to handle this procedure or have a
> contractor they work with that can do the heat treat, the aircraft guys do
> the wheel/hand work, and back around again to put it back to specs. Not
> cheap I would guess but it depends on the results desired of course. If you
> get the heat treat guys to throw it in the oven with a bunch of other stuff
> that could save some $$.
>
> Just a thought...maybe it'll help,
>
> Dennis O'Connor
> doconnor@sikorsky.com
> MB/GPW's
> WC12/13's
>
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