Use hand welding and flame-cutting equipment to weld together metal components and parts or to cut, trim, or scarf metal objects to dimensions, as specified by layouts, work orders, or blueprints.

Chips or grinds off excess weld, slag, or spatter, using hand scraper or power chipper, portable grinder, or arc-cutting equipment. Positions workpieces and clamps together or assembles in jigs or fixtures. Preheats workpiece, using hand torch or heating furnace. Ignites torch or starts power supply and strikes arc. Reviews layouts, blueprints, diagrams, or work orders in preparation for welding or cutting metal components. Selects and inserts electrode or gas nozzle into holder and connects hoses and cables to obtain gas or specified amperage, voltage, or polarity. Connects and turns regulator valves to activate and adjust gas flow and pressure to obtain desired flame. Selects and installs torch, torch tip, filler rod, and flux, according to welding chart specifications or type and thickness of metal. Guides electrodes or torch along weld line at specified speed and angle to weld, melt, cut, or trim metal. Welds metal parts or components together, using brazing, gas, or arc welding equipment. Repairs broken or cracked parts, fills holes and increases size of metal parts, using welding equipment. Welds in flat, horizontal, vertical, or overhead position. Cleans or degreases parts, using wire brush, portable grinder, or chemical bath. Inspects finished workpiece for conformance to specifications.

Mechanical -- Knowledge of machines and tools, including their designs, uses, repair, and maintenance. Building and Construction -- Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads. Production and Processing -- Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.

Equipment Maintenance -- Performing routine maintenance on equipment and determining when and what kind of maintenance is needed. Operation and Control -- Controlling operations of equipment or systems. Equipment Selection -- Determining the kind of tools and equipment needed to do a job. Quality Control Analysis -- Conducting tests and inspections of products, services, or processes to evaluate quality or performance. Operation Monitoring -- Watching gauges, dials, or other indicators to make sure a machine is working properly. Installation -- Installing equipment, machines, wiring, or programs to meet specifications.

Arm-Hand Steadiness -- The ability to keep your hand and arm steady while moving your arm or while holding your arm and hand in one position. Control Precision -- The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions. Manual Dexterity -- The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects. Near Vision -- The ability to see details at close range (within a few feet of the observer). Trunk Strength -- The ability to use your abdominal and lower back muscles to support part of the body repeatedly or continuously over time without 'giving out' or fatiguing. Wrist-Finger Speed -- The ability to make fast, simple, repeated movements of the fingers, hands, and wrists. Multilimb Coordination -- The ability to coordinate two or more limbs (for example, two arms, two legs, or one leg and one arm) while sitting, standing, or lying down. It does not involve performing the activities while the whole body is in motion. Visualization -- The ability to imagine how something will look after it is moved around or when its parts are moved or rearranged. Information Ordering -- The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations).

Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things. Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles). Monitor Processes, Materials, or Surroundings -- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems. Performing General Physical Activities -- Performing physical activities that require considerable use of your arms and legs and moving your whole body, such as climbing, lifting, balancing, walking, stooping, and handling of materials. Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources.