use the eubonics firewall translater, ver 3.0,
wind the wire right around the core, no bobbin, anybody tried that?
the closer the wire is to the core....and it's non linear. its ^2.
kind of like when try to hold two magnets apart, it seems like there is infinite pulling power when the two surfaces are extremely close.
magnetism is a very mystical force, if you think about it.
it takes the whole mass of the earth, just to exert 160 lbs on me, but a little magnet one zillionith the size can exert the same force.