> Hi Jinx, actually I meant using an electric
> current to vaporise the copper wire.

Yeah, I was just putting the idea of using a flame to bed

> From my
> personal experience, often when a component fails
> at high currents it vaporises the copper and makes

I've had that once or twice when a triac loses the will to
live. I believe telescope mirrors are silvered by electrically
evaporating the metal in a vacuum

> high quality film over a larger area. Just blasting
> the wire apart when it is next to something WILL
> give you a copper film, i've seen it so many times.
> -Roman

Perhaps one way would be to use two steel rods with a
bead of copper between their ends (like a spark gap)
and zap. The tricky bit might be getting adhesion of the
copper vapour to the ceramic. Hey, if it worked it could
be a neat way to put your own logo onto a chip

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