You can't deposit copper from a copper salt without replacing the
surface of the 'host' body by copper from the salt. CuSO4 + C does not
do anything at normal temperature, and I doubt very much if it does
anything useful at higher ones.
The carbon might oxidise though...
To err is human. To really foul things up requires a computer and the BOFH.
Find an old style battery, remove carbon electrode and use to show
Being a radio bod in youth, some resstors in those days used a
carbon rod, with tinned copper wire wrapped round the ends, then
soldered,for leadouts. Others used a press on cap...
If you vacuum deposit something onto it you aren't really soldering to
the graphite. It is more akin to the small brass caps crimped onto the
carbon rods in old style batteries. You could solder to the brass but
you weren't soldering to the carbon.
Suspect someone is claiming a benefit under false pretences? Incapacity
Benefit or Personal Independence Payment when they don't need it? They
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