I’ve just tried one connected to a test light and it does conduct electricity, though for how long is anyone’s guess. Graphene from a pencil would conduct electricity and clean the wires exceedingly well as you say, but fashioning a collector might be a problem.
Im intrigued by your old steel bolt comment and I’m trying to picture how that would work, or even be made?
I have to say that your line and videos on YouTube are outstanding, it all seems so natural, especially the blue tongued dragons! I’m using the LGB wires or rods, so as much as a working trolly pole is very desirable, actually getting one to work might be another question…suggestions gratefully recieved.
Cheers
Martin