Electric welding or electric resistance welding is the process that joins two metal parts by passing current between the parts. The parts must be fixed by pressure so that the current can pass between them, and the heat generated at the fixing point causes the material to melt and join the two parts. This process is simpler than other types of welding. Welding is not continuous as it is spot welding. This process is typically used in thin sheets. It is considered a good weld when the two parts are detached and the material where it was spot welded is pulled out.