Winston wrote:
Rich Grise wrote:
(...)
I'd recommend against aluminum, because that oxide layer will interfere
with the electrical continuity. I got really lucky - My office opens onto
a fab shop and there's some weld filler that's awesome - iron coated with
pure copper. You could even use coat hangers.

For that matter, you could use ordinary #14 household wiring wire -
stretch it a little bit to straighten it out.

I suppose the best practical elements would be
stainless filler wire, yes?

There's some kind of mild steel filler wire that's copper-clad; I don't
remember the designation, maybe E75 or so. It solders like a dream. :-)

Stainless is corrosion-resistant, yes, so you could probably rely on the
mechanical contact under screw pressure.

Cheers!
Rich