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Black delrin rotor



Hi All,
	Picked up some 6mm delrin sheet at a rally today (thanks Mike). Does
anyone know if this is ok to use for a rotor on a spark gap?. The black
isn't carbon as the stand off voltage is 50 kv in according to the RS
catalog. It seems to be slightly less strong than tufnol so I was thinking
of using two sheets stuck together. As anyone used this material for a
gap.?

cheers 
bob golding