Oh yeah --- Green (pure) is super old skool....
Use the proper tungsten for the proper HEAT RANGE which there are many charts for. You can find these at Miller or Lincoln. The diameter and type of tungsten is based on the work - A/C or DCEN - and the amperage range etc.
Crank that bad boy up and use too much current for the tungsten diameter and you get all manor of crud in your weld!
Since I'm old as dirt and can't remember anything (what were we talking about?) I use charts for everything lest I get confused. I tape them on the sides of my machines for easy reference.
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