Gas Metal Arc Welding (GMAW) is frequently referred to as MIG welding. MIG welding is a commonly used high deposition rate welding process. Wire is continuously fed from a spool. MIG welding is therefore referred to as a semiautomatic welding process. MIG Welding Benefits : All position capability Higher deposition rates than SMAW Less operator skill required Long welds can be made without starts and stops Minimal post weld cleaning is required