Ok about TIG and gasses, now I've been using CO2 with a MIG for mild steel. Can I proceed to use the CO2 with the tig for mild steel aswell and get a bottle of argon for the more exotic metals? Would appreciate some enlightment in this area aswell.

 

Not recommended at all. Get the argon right away.
I have never used co2 for tig. I know that even for mig and flux,
the arc characteristics are not all that good compared to a good argon/co2 mix.

 

tig needs argon, do a search on google or miller site to learn more.

 

CO2 is not an inert gas. It will not shield the weld pool.


Helium is used in tig as it is inert and provide more heat and penetration.


Argon is the gas of choice. It can be used to weld almost any material that can be welded.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">CO2 is not an inert gas. It will not shield the weld pool.</TD></TR></TABLE>
Yeah, I know its not inert, but how come you can MIG weld with it, but not tig weld?

Argon would be ok, 300euros for a bottle with 10year inspection and 60euros to fill it up.