Re: easy tungsten source?

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

Original poster: "Luc by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ludev-at-videotron.ca>

Hi Ted

I think too, that you need forced air; the tc donuts have a lower
surface to get rig of the heat and tc is a poor heat conductor.
May be you could try to brass soldered them to copper heat sink.
If I remember well your tc donuts are 1/2" try to solder them to
1/2" pipe cap and use a 2" or 3" length of pipe as heat sink,
maybe this way you don't need force air. I plan to try to make
donuts with tungsten welding rode if I don't have success I hope
your friend will agree to sell more tc donut ( I want to try a
trigger spark with them ).

Cheers, Luc Benard  

Tesla list wrote:
> 
> Original poster: "Ted Rosenberg by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <Ted.Rosenberg-at-radioshack-dot-com>
> 
> Hi Bert:
> Yes, I believe marc metlika used a string of tc donuts with great success.
> But you mention forced air.
> On my string of 9 sweat couplers, each 1.75 x 2, I used absolutely no forced
> air and it did not seem to make any noticable difference.
> Do you believe the carbide string will demand that I used forced air?
> I have some nice fans I can install in a plenum thing. But if I can get away
> without FAQ (forced air quenching) I'd prefer to keep it simple.
> 
> Safety First
> 
> Ted
> ==============================
>snip