Original poster: DickHamly-at-aol-dot-com In a message dated 00-12-02 14:31:39 EST, you write: << Mddeming-at-aol-dot-com >> I have used the same 14 hockey puck caps for a 15/60 tesla coil and others since 1972. Those same caps are now in a marx generator. I have not lost any to electrical failure. I have lost two due to trying to tighten the screws too much and ruining the terminal. Dick Hamly