On Thu, 15 Nov 2018 12:45:04 +0000, John Rumm wrote:

Most wire fed gas shield welding on steel uses CO2 as a primary
shielding gas rather than pure Argon or Helium. CO2 is classed as an
"Active" rather than an "Inert" gas, hence MAG rather than MIG.

Kind of struggling here to work out what use *any* non-inert gas would be
in a welding process. The very last thing you want is oxidisation!

Yup, the more refined the process, the cleaner it needs to be usually.
If you want to weld through a load of rust and crap, there is not much
to beat stick!

True! Stick plasma blasts the living **** out of *every* contaminant
known to man.



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