> I was thinking the hot copper vapor might oxidize in the air
> before it got deposited, but again, I don't know.  If it did oxidize,
> you couldn't solder to it and it wouldn't be a conductive layer
> anyway.  If vacuum is impractical, how about inside a plastic
> bag filled with nitrogen or carbon dioxide?

A white hot oxy-acetylene flame is a very reactive environment
and any metal vapours coming off would be oxides or other
compounds from the carburising effect of unburnt acetylene. For
example, when burning galvanising off, the zinc will never re-
deposit as metal, but a yellowish powder. This afternoon I
vapourised some copper, and it fumes but isn't seen again as
pure metal, so any method in air is out. I had the thought of doing
it up at the Titirangi Amateur Dramatic Society's production of
As You Like It, but a church hall without an atmosphere isn't
quite the same as a vacuum

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