On Thu, 15 Nov 2018 23:20:25 +0000, Fredxx wrote:

It's normally for arc stability. It is normal to add a small amount of
CO2 to argon as pure argon has poor arc stability. O2/argon mixes are
for stability. Though only a couple of % of O2 is needed.


Is there any subject on earth you actually *don't* know anything about?
Just curious....


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