Welding Equipment - An Overview of the Tools Required for Various Welding Processes Shielded metal arc welding (SMAW), also known as manual metal arc (MMA) welding, is a manual arc Welding Equipment process that uses a consumable electrode covered with a flux to lay the weld. The SMAW equipment needed includes a welding power supply, electrode holder, electrodes, work clamp, and protective gear. The power supply produces direct current which passes between the electrode and workpiece. The electrode holder grips the electrode, which melts during the process to form the weld pool. Get More Insights: Welding Equipment (https://fortunetelleroracle.com/technology/welding-equipment-essential-tools-for-fabrication-and-repair-projects-956242 )