Re: 1/2" tungsten roundstock?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "john by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jsturgeo-at-tampabay.rr-dot-com>

David, You can get tungstens with a 3/8" face that are silver brazed to 1/2"
Mild steel. I have a Miller 350 syncrowave TIG welder and these are for the
spark gap for the high frequency unit used in welding aluminium. I don`t
have a part number but these are available at any welding supply under the
name "Spark Gap Points". They may vary some between manufactures, Miller,
Lincoln, Airco and Hobart. I changed the ones in my welder about 5 years ago
and the cost was about 3 bucks each, (4 required). Best regards, John
Sturgeon
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, August 05, 2003 9:56 AM
Subject: 1/2" tungsten roundstock?


 > Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<Tesla729-at-cs-dot-com>
 >
 > Hi all,
 >
 > I am in the process of rebuilding my coil system and
 > have built a SRSG with G-10 and will be using tungsten
 > electrodes. I have been considering 1/4" tungsten elec-
 > trodes since that's the largest diametered size available
 > from a welders supply but I was wondering if I should
 > even consider 1/2" diameter tungsten since I plan on
 > running at about 10 kVA? If I should get that large
 > of dia. tungsten for electrodes, where would I aquire it
 > at this size? Would the 1/4" tungsten be large enough
 > for the relatively short runs that most coilers do?
 >
 > Also, I have noticed some RSGs where tungsten tips
 > were somehow affixed to a stud of another type of
 > metal like brass, and I was wondering how tungsten is
 > brazed to another type of metal?
 >
 > Thanks,
 > David Rieben
 >
 >
 >