"Tim Wescott" wrote in message
news

As you have an OA torch it seems to me that if you use a reducing
flame the aluminum will have less of an opportunity to form an oxide
coating and may solder easier. Expert opinion anyone?

AFAIK that would only slow things down. Keep in mind that aluminum is
so electronegative that it'll reduce rust back to iron, and produce
enough heat in the process to melt the iron to steel (think "thermite
welding"). I don't know if it can reduce CO or CO2, but I wouldn't be
surprised.

--

Tim Wescott

That's a good point. I don't know either but it would be easy and quick
to test.
Art