Original poster: "Luke" <Bluu-at-cox-dot-net> I was toying with the idea of making my primary out of a strip of metal. Seems like it may be easier to construct a primary coil from a strip. Is spring steel ok for this or is copper the way to go? Or are there any other suggestions for material? The other question is how wide and thick is recommended? Luke Galyan Bluu-at-cox-dot-net