Steve Maki lists at oakcom.org Tue Sep 20 15:19:37 EDT 2022 wrote:
> I had sworn off copperweld many years ago after noting that the copper
> plating did not last forever.
Was that real copperweld, or was it copper-plated steel with only a minuscule
layer of copper deposited on the surface, like the stuff used for electric
fence wire?
Real copperweld has a thick copper jacket that is practically indestructible.
I use #10, salvaged from an abandoned railway telegraph line of yesteryear,
scored free for the taking many decades ago. You can beat it with a hammer or
leave it buried in the soil (as ground radials) for years and the jacket won't
come off unless it's deliberately removed with a file or grinding wheel.
That copper-plated junk begins to rust through in only a couple of years. The
copper is so thin that it probably has negligible benefit from the skin
effect; you are effectively using plain old steel wire.
Don k4kyv
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