Shielding gases are used in arc welding where a power supply creates an electric arc between an electrode and the metal stock to be welded. In gas metal arc welding (GMAW), also known as MIG welding, ...

Gas metal arc welding (GMAW) can also be referred to as MIG (metal inert gas) if the shielding gas is inert as for example argon or MAG (metal active gas) if the gas has a content of an active gas ...

[Brett] from [Theoretically Practical] has done with his old MIG welder ... and a spot welding timer. Pre-flow starts the flow of shielding gas a moment before energizing the filler wire, while ...