Chips O'Toole wrote:It sounds like I'm going to need a whole bunch of tanks if I want to use both MIG and TIG on ferrous metals, stainless, and aluminum.
You can do it all with 2: 100% Argon to TIG steel, aluminum, etc. 75%/25% MIG for steel, 100% Argon to MIG aluminum.
Helium is not required, but helpful with Aluminum TIG.
I use 3: 100% Argon, 100% Helium and a 75/25 for steel MIG. I use a Y connector on the TIG to allow any ratio of He with the Ar.