>...I designed and built a squirl-cage RSG using ~6" x 1/2" copper pipe. >There are two disks with 8 pipes. Since the rotational force would be >great at high rpm, I built this with as tight a tolerance as possible. >The fixed electrodes are 5/8" spheres connected to a 5" x 1/2" bolt. Bart; Perhaps I mised this; What material did you use to make the two disks? Thanks, Daniel