"Bruce L. Bergman" wrote in message
news
On Sat, 29 Sep 2007 19:58:11 GMT, John Doe
wrote:

With Aluminum there is very little difference between the heat
needed to anneal and to melt. You'll end up with some "Oopsies" and a
puddle of Aluminum on the floor where you lingered with the torch just
a little bit too long...

Just in case the entire world doesn't know this trick:

When annealing aluminum with a OA torch, turn off the oxygen and smoke the
metal with the acetylene flame. Turn oxy back on, gently heat until the
carbon burns
off. It should be annealed at that point, at least well enough for
bending/forming.
Keep the torch moving, especially on this stock.

Bill