Gap electrodes

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "The Big Giant Kevin by way of Terry Fritz <twftesla-at-qwest-dot-net>" <neo4s-at-hotmail-dot-com>

Iv been using dresser drawer knobs for spark gaps. They’re about 1-inch 
diameter spheres, brass, and since they have a screw on the back, they are 
very easy to adjust (just turn). They cost under $3 each at the hardware 
store. They were nice and shiny until I ran some current through them, now 
there oxidized and pitted. Other than that they work really good.

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