For brass, bronze and copper check out this site
http://www.cupricnitrate.com/colorchips.htm

Galvanized metal is hard to etch because it is intended to resist oxidation.
I think an Alkaline solution might do the trick. Try ammonia and salt with
a bit of soap for a mild etch. Try caustic cleaners like Drano or bathroom
cleaners next.

For acids try muriatic, acetic (vinegar) or toilet cleaner (same as
muriatic, HCL). Acids are more likely to impart a rusty result.

Just leaving it outdoors on the wet ground under some leaves will achieve an
old look within weeks. Rotting leaves give off low concentrations of
hydrofluoric acid which is why it can etch glass bottles left outside.



"Colbyt" wrote in message
news:y39Hf.548480$084.163126@attbi_s22...
I have a client who would like to make galvanized metal, chicken wire, look
far older than it is. She is trying to match or at least get close to
some
that has been used in lieu of a kitchen cabinet panel.

I know for a fact that dish machine soap discolors it some. The color she
is trying to achieve is about the color of a well circulated penny. Hmm.
I
wonder if the wire in the cabinet is copper?

Colbyt