Al wrote:

On 3/13/2011 5:48 PM, Cydrome Leader wrote:
What's a good way to keep solder from flowing or wetting copper or brass
parts being soldered- sort of like an anti-flux. I recall seeing
something posted here about it, but can't locate it.

I have used regular "white out" correction fluid for this lots of times.
works great. The water based stuff is makes less obnoxious fumes but
seems to be hard to find in the store sometimes. The solvent based stuff
works just as well, but I use with good ventilation so I don't inhale
the fumes when I heat it.

Try "white out for copies," maybe? I'd have thought Vaseline, but depending
on your heat source, that might make nasty fumes.

Or, just don't slop molten solder all over everything. ;-)

Cheers!
Rich