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Re: spark gap design
X-Envelope-From: James.P.Lux-at-jpl.nasa.gov Wed Aug 26 19:06:05 1998
Tesla List wrote:
>
> Terry,
> The way I would try to center the copper tubing would be to fill each piece
> with epoxy or some robust filler. Once cured it could then be gently
> chucked in a 3 jaw chuck on a lathe. Then with the lathe running the 1/4"
> drill is applied to it. Should be fairly centered. In case the drill
> drifts slightly, go in only half way and then turn your piece around in the
> chuck and meet the first hole from the other end.
>
Or how about getting some "machine tubing" of the proper diameter. You
could either get it copper plated (aieeee... not another electroplating
at home project!!), or get tubing that just fits inside the copper pipe
(an interference fit is what I would go for, then chill the steel
machine tubing and heat the copper and slip one into the other. Of
course, copper pipe is notoriously unround. You could also probably get
phenolic or G10 rod stock of a suitable size and epoxy it into the pipe
sections.
> >