HDR electromagnet
Steven Gibbs build the HDR electromagnet using copper 21' gauge magnet wire. This copper wire has enamel that must be burned off from the ends. Steven Gibbs told me that each Hyper Dimensional Resonator - HDR uses 200' of wire. So that means he can create five electromagnets from one 1000' spool of copper magnet wire.
He also told me that the copper wire must be pure or the harmonics of the electromagnet are wrong. In the 1980's Steven Gibbs used Radio Shack speaker wire, but that did not work as well as magnet wire.