Re: Temporary electrodes for rotary

• To: tesla-at-pupman-dot-com
• Subject: Re: Temporary electrodes for rotary
• From: "Mark Broker" <broker-at-uwplatt.edu> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Fri, 10 Mar 2000 06:53:18 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Ooops

I never meant the the tungsten should be drilled and tapped.  I meant that
the 3/8 (or larger) bolts that the rods are inserted into should be drilled
and tapped.

My tungsten electrode came today.  Had a bit of red paint on one end, and a
little bit in the middle of the rod.  I sanded it off (lacking an odorless
paint thinner) with 240 grit emmery cloth..... barely scratched the
rod....  can't wait to round over the ends of six of them (2 stationary, 4
rotary)..... ;-)

Mark


Tesla List wrote:

> Original Poster: "Reinhard Walter Buchner" <rw.buchner-at-verbund-dot-net>
>
> Hi Michael,
>
> > Original Poster: Clearspring1-at-aol-dot-com
> > I never had occasion to drill or tap tungsten and expect
> > that would be quite  a challenge without the specialty
> > tools.
>
> Right, if you donīt have diamond tipped tools, donīt even
> try. All youīll do is kill your tools. Tapping a tungsten rod
> (even with a diamond covered tap) will result in about 50%
> failure, because the tungsten is da**ed hard. Also expect
> to forfeit a couple of these taps (=>$$$). Best to make
> a work-around solution.
>
> Coiler greets from Germany,
> Reinhard

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