Original poster: "J. B. Weazle McCreath" <weazle-at-hurontel.on.ca> Copper sulfate, available at any drug store or home and garden shop will also work very well when making "wet" capacitors. It allows the use of half inch copper water pipe as the electrodes with no corrosion worries. 73, Weazle, VE3EAR/VE3WZL Details of my "Hyperbaric Gap" and Tesla coil are at: http://www.hurontel.on.ca/~weazle