Spot Welding

Spot welding is the process of connecting sheet metal together by fusing a number of 'spots' which join the two parts. A spot welder makes these connecting spots by passing a current through the metal, this causes the metal to heat up at that spot and fuses the two parts together. A spot welder can be calibrated for different thicknesses of metal so that the current is applied for the right amount of time to fuse the parts without melting them.