... crackle, abrasion, wear and tear, miscalculation in manufacture repair metal tools/ better than Spot welder, Arc welder / cold welder XKS ... casting dies, metal products, machine spare parts and other tools.2.Suitable defect can repair: Pin holes, gas hole, ... steel, stainless steel, casting steel, cast iron, cast aluminum, tungsten carbide alloy, and all electrical conductor.4. The position can repair ...