Job Description:

• 1) Cuts, trims, or scarfs metal objects to dimensions, contour, or bevel specified by blueprints, work order, or layout, using arc-cutting equipment: Positions workpiece onto table or into fixture or with jib or crane.

• 2) Selects carbon or metal-coated carbon electrode, gas nozzle, electric current, and gas pressure, according to thickness and type of metal, data on charts, or record of previous runs.

• 3) Inserts electrode and gas nozzle into holder and connects hose from holder to compressed gas supply.

• 4) Connects cables from power source to electrode and workpiece or fixture, to obtain desired polarity.

• 5) Turns knobs to select amperage.

• 6) Turns lever to adjust jet of gas to blow away molten metal.

• 7) Strikes arc and guides electrode along lines to cut through metal.

• 8) May cut off chips or sprues and burn out cracks and holes.

• 9) May use holder having two electrodes.

• 10) May cut without using gas jet.

• 11) May use nonconsumable tungsten electrode and gases, such as helium or carbon dioxide, and be designated Arc Cutter, Gas-Tungsten Arc.

• 12) May use plasma-arc cutting torch and gases, such as nitrogen and carbon dioxide, and be designated Arc Cutter, Plasma Arc.