"Mike Firth" wrote in
:

Before this gets too confused, Brian knows what copper foil tape is
colleen, he was saying the stuff with adhesive is his middle name.
Copper foil without adhesive backing, .003" thick, is available
from K&S
Engineering which sells the flat brass and telescoping tubing in
hardware and hobby stores. They sell it as an embossing product and
for cutting out flower petals, etc. Not all stores carrying the
tubing will have the foil.
Ironically, in the middle of this discussion, I got a review copy of

snip
Foils in various thicknesses are available from engineering or
automotive supplies as 'shim' used for making machine parts fit. Comes in
brass, copper, steel, aluminium etc, and thickness varying by thousandths
of a inch.
Phil