spot welding performed by gas metal arc welding (GMAW) in which spot weld starts on one surface of one member and burns through to the another member; fusion between the members occurs, and a small nugget is left on the metal surface (see: arc spot welding; compare: gas tungsten arc spot welding; resistance spot welding), pealikuti asetsevate detailide ühelt poolt liitmine kui detailid surutakse teineteise vastu erikonstruktsiooniga MIG-põleti abil ja sulatatakse läbi ülemise detaili punktidena kokku (vt punktkaarkeevitus; vrd TIG-punktkeevitus; punktkeevitus)