Originally posted by antena
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One thing with the current punch from cap discharges is this... if it is a 400v/300uf cap bank...the discharge of that much potential to make "hot electron current" is only hot when pushing into a resistance. However, if that charge in the caps is sucked out into a negative resistance, it is cold. Both will give an electromagnetic charge in a coil...one hot and one is cold.
I didn't use silvered tips on my copper rods but from some of the wear I'm getting, I can imagine it would hold up longer.
The space between my rods varied from a fraction of a mm up to a couple mm's but not as big as you mention.
I bought my copper mesh screen from an art supply store. It is commonly used for making sculptures. It is really thin so very pliable and easy to work with.
You can get the effect once per switch as long as there is enough in the caps.

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