Original Poster: Greg Murray (waltmurray-at-msn-dot-com) Hi All, I recently came across 65 pounds of 18 awg gauge magnet wire for free! Would this be any good for building a Tesla secondary ? I was planning on making a 4in. diameter secondary. Can I increase the diameter of the secondary to offset the large size of the magnet wire? I'd like to be able to use the wire if I can. Regards, Greg Murray -Museum of Science, Boston