TIG spot welding holds an important place where normal resistance spot welding cannot be employed. Accessibility to the underside of a weldment can be restricted by an adjacent work-piece or other space constraint.

Although TIG spot welding might not produce welds as timely as a MIG application might, technology with power sources, controls and torches making this process easier to use, as well as greatly improving the quality of the spots over MIG.

The use of hand-held Arc spot welding is especially applicable for situations where resistance spots welding needs high pressure, high currents, does not have easy access and thus fails to weld. Further, the process can be used at relatively high temperatures since a short arc time will not promote distortion in the material being welded.