... One thing I'm puzzled about it how Mike's test strip of paint which he stated was roughly of similar dimensions to what Ed planned to do was had only coupler ohms of resistance.
I stand corrected, very much so. I don't know what I was remembering. I just measured a test strip dispensed from the nozzle, thoroughly cured, roughly 0.075" wide by 0.020 high, and it ohmed out at a consistent 250Ω per inch.
So no, it's not all that useful as a conductor of any sort beyond bridging very small gaps at low currents. I have it as an adhesive for adding detection resistors to wheelsets, and for
that the added resistance is negligible, even unmeasurable.
So... my bad. Sorry.