On Sun, 20 Oct 2013 00:38:53 -0500, Richard
wrote:

On 10/19/2013 10:37 PM, Tom Gardner wrote:
On 10/19/2013 12:51 PM, RogerN wrote:
"Tom Gardner" wrote in message
...
snip

I've been using my Miller AC/DC for TiG for decades, never had an HF.
Real
men scratch start an arc!


Have you tried that on Aluminum?

RogerN



Nope, never welded Al.


I've melted some before.

Just about the time it gets hot enough to flow,
it melts and falls on the floor.

Years ago I built a AC transformer TIG set. You really need a high
frequency generator to stabilize the arc but it did work. If I
remember correctly Sears Roebuck or Montgomery Ward used to sell a
H.F. add on for transformer welders.
--
Cheers,

John B.