@spintronic
I think maybe we are on the same page.
The iron wire on the secondary and choke acts as part of the transformer core. It gets magnetized, the electron orbits align themselves at this time.
When the orbits are aligned, they have a polarity, a positive and negative pole. The magnetic field created by the primary winding locks the electrons into place, because opposites attract, therefore no current flows.
This may be oversimplified but I think it fits the electron bounce that Stan describes. Electron spin theory is new to me, but still corresponds with my interpretation of what Stan wrote.
Maybe another way to do it is make a toroid core out of the iron wire which would be the secondary winding and choke, then wrap the primary on top of it. The leakage may be easier to contain because of the toroid configuration, but definetly harder to wind.
Without a doubt, there are always multiple ways of accomplishing a goal. I think copper will work, but less efficient in a different winding configuration.