Remember too -- these TIG machines are INVERTER machines -- DO NOT BALL THE END OF THE TUNGSTEN when welding aluminum.... that is "old skool"... sharpen the tungsten to a point - square off the end just a touch - and weld away... I'm using 2% Ceriated or Thoriated on all my stuff - now I don't even switch "type" when going from SS to Alum... I do use a fresh tungsten - but I no longer use the pure (green end) to do aluminum.
Just my 2 cents (sense? LOL) worth
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