... crackle, abrasion, wear and tear, miscalculation in manufacture repair metal tools/ better than Spot welder, Arc welder / cold welder XKS ... Dies, forging mould, injection mold, die-casting, pressure casting dies, metal products, machine spare parts and other tools.2.Suitable defect ... surface, and etc.Welding part:Welding application: repair metal tools/ better than Spot welder, Arc welder / cold welder