Try liver of sulphur, but don't leave it on long or the oxide will get
too thick and flake off.

Richard


Roger Jensen wrote:
I need to turn a bit of copper foil black. I have less than 1 square foot to
treat. Paint isn't an option. Anyone know of a good way to do this? Google
search wasn't real productive. I am wondering if any of the Birchwood gun
stuff would work?? I tried using a sulphur paste, it tarnished it, but not
black...

Thanks,

rog




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Sculptures in copper and other metals