What is the function of a spot welding tool in body repair?

The function of a spot welding tool in body repair is to join sheet metal panels by melting and fusing them together. This process is essential in automotive repair and manufacturing because it creates strong, localized welds at points where metal sheets overlap. The tool generates heat through electrical resistance, causing the metal to reach a melting point and allowing the two surfaces to bond as they cool. This method is especially effective for repairs requiring strong structural integrity, such as in the casing of a vehicle.

Other options may pertain to different tools or processes in body repair. Buffing out scratches concerns surface restoration and aesthetics, while applying adhesive pertains to the bonding of materials rather than welding. Aligning components is a crucial step in the assembly process but does not describe the primary function of a welding tool. Thus, the correct answer highlights the specific role of spot welding in effectively joining metal panels in repairs.