Where do I get Tungsten welding electrodes?

To: "'Tesla List'" <tesla-at-pupman-dot-com>
Subject: Where do I get Tungsten welding electrodes?
From: Tesla List <tesla-at-stic-dot-net>
Date: Tue, 17 Mar 1998 23:28:08 -0600
Approved: tesla-at-stic-dot-net


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From:  Cliff Fahrer [SMTP:cfahrer-at-In-Touch-dot-net]
Sent:  Tuesday, March 17, 1998 8:50 PM
To:  Tesla List
Subject:  Re: Where do I get Tungsten welding electrodes?

Tesla List wrote:

Mark,

I noticed that you mentioned that .38 in tungsten tip rods would be good
to use on the stationary part of a rotary gap. Is there any reason that
they can't be used on the rotating part of the RSG? If they won't work
I'll be doing some re-desiging and rebuilding. (Of course I built the
rotary part first, and have yet to build the stationary part!!!)

Thanks in advance,

Cliff, Cliff, (doing everything twice), 
> ----------
> From:  Mark S. Rzeszotarski, Ph.D. [SMTP:msr7-at-po.cwru.edu]
> Sent:  Tuesday, March 17, 1998 5:21 AM
> To:  Tesla List
> Subject:  Re: Where do I get Tungsten welding electrodes?
> 
> Hello All:
> Matt wrote: Where do I get Tungsten welding electrodes?
>         There is an excellent gap material available in the U.S., and
> probably elsewhere in the world.  These are tungsten contact points made by
> Miller Electric Mfg., Co. for their TIG welders.  Their part number is
> 020-603 if my notes are right.  They cost under $4.00 each.
>         Each electrode is a 1/2 inch diameter by 1.5 inch long steel
> cylinder with a 3/8 inch tungsten electrode imbedded in one end.  These work
> great for static gaps (5 pairs in series, each gapped to 0.020 inches, with
> forced air) and they are good for the stationary part of a rotary spark gap.
> One can drill and tap the end to fit a #10 screw, or mount them in a solid
> block of aluminum with a set screw to position them.
> 
> Regards,
> Mark S. Rzeszotarski, Ph.D.