Buy gas welding and cutting equipment for sale online, including torches, torch outfits, regulators, acetylene replacement products and other accessories. Ships fast from 1 of 5 stores/distribution centers in Wisconsin & Illinois. Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) is a welding process in which an electric arc forms between a consumable MIG wire electrode and the workpiece metal(s), which heats the workpiece metal(s), causing them to melt and join. Craftsman MIG 180 gas/no gas welder with cart includes: Welder, cart, starter spool, face mask, MIG gun and chipping hammer/wire brush Easy to control feed rate lead to cleaner welds Power controls tailor arc to various materials and thicknesses MIG Welder Settings can vary substantially from model to model and certainly from brand to brand. This article is more a general guideline to help the novice welder understand how the various settings will affect your results. Unlike welding with a stick welder, MIG welding is a semi-automatic process.