Hi
I run a 180 amp MiG on BOC (british oxygen company) Argoshield, i am looking at buying a 160 amp AC/DC TIG set and wondering if i can save money on having to rent and buy another bottle of pureshield argon for the TIG? can i use the less pure MIG argoshield as a shielding gas with the TIG ? or only on limited materials?
Many Thanks

Richy