Yeah, the model engine glow plug would be an interesting idea. I may have to get one to see what they look like. It sounds like the zippo lighters have platinum black inside them. Have you ever taken one apart?

Sanding the wire could help Bill, but this is pretty thin stuff and the 0.001" will be even thinner. I can't imagine your going to increase surface area much by doing that, but you might weaken the wire considerably.