Hmm...me is thinking that the roll of Aviation Stranded Silver plated copper wire might just come in handy at last. Thermal heat shielded and double insulated.
That's 'flash as a rat with a gold tooth', for an undistinguished old Victa! The insulation does need to be able to handle ~15kV or so, though.
As for the copper/brass sheet...heaps of it in the old cardboard tins I picked up at an Op Shop...0005" to 0025' in 0005' increments.
Goodo.
