Can You Use Gas For Mig Welding. While it is technically possible to weld with mixtures that contain gasses like carbon dioxide or oxygen it is not at all recommended. What most people mean by this question however is can you use an MIG welder without attaching a cylinder of gas.
You want to weld fast. What most people mean by this question however is can you use an MIG welder without attaching a cylinder of gas. For most hobby welders what shielding gas you use is not as important as how much time you get to weld and improve your skills.
MIG welding can tolerate semi-inert gas as it helps with the welding process.
Yes a gas is needed for MIG welding. An Active gas is used with Mig Welding for two reasons. Both gases are appropriate for MIG welding but argon is used more frequently. No you should not use the same gas for MIG and TIG unless you would like to damage your weld or your end product.