Homebrew PCBs

>
> Still think copper may be hard to heat up enough.

Err, what makes you think it needs to be warm?

The ribbon sits on the copper, heat is applied from the other side of
the ribbon, the wax melts onto the cold copper and solidifies, then
the ribbon is pulled away, the wax should have stuck to the copper
with more force than the ribbon, so pulls off the ribbon backing.