Hi Chip; I have used 15 kv 60 ma to make CS using the ARC CO2 method. The wet electrode can be anything from a #14 wire to a large plate. However the arc electrode MUST be at leas a 0.40" x 1/2" sheet fastened on to a 1/4" bolt. You MUST use a thermoset plastic such as phenlic for the support of the bolt as one whale of a lot of heat is developed that will melt thermoplastic plastics.
When I tried a #14 top electrode at 60 ma it vaporized!!!! "Ole Bob"
