On Fri, 28 May 2010 18:34:37 -0400, Bob Engelhardt
wrote:

I am repairing an aluminum brake (i.e., a brake for bending aluminum
house flashing/cladding). It is made of aluminum castings and
extrusions, held together with steel bolts and screws. Every single
bolt/screw is corroded in place! Not so much rusted as bound-up by
corrosion of the aluminum it's in. AND ... all the screw are Phillips
head! &!@^&%^%$&*?!

Anyhow, I WILL get the screws out and when I put it back together I will
not use Phillips heads and I will coat them. So, the question is: do I
coat them with anti-seize, or with anti-oxidant? If anti-seize, does it
matter which form?

Thanks,
Bob

Burndy Penetrox A. It's used on aluminum antenna towers. The
metallic particles are zinc. $13.95 for an 8 oz squeeze bottle, a
lifetime supply for the likes of we. I'd give a cite but I'm on very
slow dial up for a few days. Google Penetrox, you'll find it.

I smear a dab of this stuff on ally lightbulb bases before screwing
them in. I haven't had a stuck light bulb in a decade.