All metalworkers and plastic workers not listed separately.

Operates and prepares multiaxis numerical-control milling machine to mill surfaces of metallic and nonmetallic work pieces according to specifications and tooling instructions, applying knowledge of machining methods. Threads perforated or magnetic tape through read-head in control console, or enters commands... [+] More

Operates and prepares multiaxis numerical-control milling machine to mill surfaces of metallic and nonmetallic work pieces according to specifications and tooling instructions, applying knowledge of machining methods. Threads perforated or magnetic tape through read-head in control console, or enters commands into control panel, to retrieve preprogrammed machine data from mainframe computer. Inserts precision indicator in machine spindle, and depresses switches to jog spindle into contact with work piece, synchronize tape and tool, and record setup point. Retracts spindle and loads and secures first preset tool and holder. Starts machine and observes cutting operation. Compares numerical data display with specifications on operations sheet. Assembles and presets tooling for next operation during automated cycle to reduce machine downtime. Replaces milling tools with drilling and boring tools at specified change points to reduce or eliminate subsequent machining of work piece on another machine. May operate machine on preliminary dry run before machining first part to detect errors in tape or computer program. May be designated according to make, trademark, or configuration of machine, characteristics of control system, or type of product as contour-path tape-mill operator; planer-type milling-machine operator, numerical control; profile-mill operator, tape control; tape control skin-or-spar-mill operator; tape keller operator. [-] Less

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Prepares and operates multiple-spindle drilling machine to perform simultaneously or in sequence machining operations, such as drilling, reaming, countersinking, spot-facing, and tapping of holes in metal work pieces, according to specifications, tooling instructions, standard charts, and knowledge of machining procedures. Reads blueprint or job order for product specifications, such as hole locations and dimensions, and tooling instructions, such as drilling jigs, holding fixtures, feed rates, cutting speeds, and cutting tools to be used.

Places work piece in fixture or positions it on machine table, and secures it with clamps. Mounts cutting tools in spindles. Positions and secures specified drilling jig and moves controls and positions spindles to align tools with guide bushings in jig. Sets stops to control depth of cut. Moves controls to set cutting speeds and feed rates, and regulate flow of coolant. Engages power feed and observes machine operation. Periodically verifies conformance of machined work to specifications, using such measuring instruments as calipers, micrometers, and fixed gauges. May machine plastics or other nonmetallic materials. May tilt table or spindles to machine holes at specified angles. [-] Less

Prepares and operates engine lathes to machine metallic and nonmetallic work pieces according to specifications, tooling instructions, and standard charts, applying knowledge of machining methods. Reads blueprint or job order for specifications, such as dimensions and tolerances, tooling instructions on... [+] More

Prepares and operates engine lathes to machine metallic and nonmetallic work pieces according to specifications, tooling instructions, and standard charts, applying knowledge of machining methods. Reads blueprint or job order for specifications, such as dimensions and tolerances, tooling instructions on holding devices, feed rates, cutting speeds, depth of cuts, and cutting tools.

Positions and secures tools in holders, using wrenches. Lifts work piece manually or with hoist, and positions and secures work piece in holding device, machine table, chuck, centers, or fixture, using clamps and wrenches. Sets specified rotation speed, feed rate, and depth of cut, and positions tool in relation to work piece. Starts machine, turns handwheel to feed tool to work piece, and engages feed. Turns valve handle to direct flow of coolant against tool and work piece. Observes cutting action of machine to detect excessive wear or malfunction. Verifies conformance of machined work piece to specifications, using micrometers, calipers, and fixed gauges. May scribe reference lines on work piece, using scale, or template and scriber, to lay out interrelated surfaces, lengths, and depths of cut. May compute unspecified dimensions and machine settings, using knowledge of metal properties and shop mathematics. May set up tracing attachment that guides cutting tool to follow movement of tracing stylus along template to duplicate template profile on turned work piece. May be required to have experience with custom or production work, or with particular material, product, level of precision, or size, type, or trade name of machine. [-] Less

Prepares and operates machine tools, such as lathes, milling machines, boring machines, and grinders, to machine metallic and nonmetallic work pieces according to specifications, tooling instructions, and standard charts, applying knowledge of machining methods. Reads blueprint or job order for... [+] More

Prepares and operates machine tools, such as lathes, milling machines, boring machines, and grinders, to machine metallic and nonmetallic work pieces according to specifications, tooling instructions, and standard charts, applying knowledge of machining methods. Reads blueprint or job order for product specifications, such as dimensions and tolerances, and tooling instructions, such as fixtures, feed rates, cutting speeds, and depth of cut, and ascertains sequence of operations.

Picks, positions, and secures tool in tool holder (chuck, collet, or toolpost). Positions and secures work piece in holding device, machine table, chuck, centers, or fixtures, using clamps and wrenches. Moves controls to position tool and work piece in relation to each other, and to set specified feeds, speeds, and depth of cut. Sets up fixture or feeding device, starts machine, and turns handwheel to feed tool to work piece or vice versa, and engages feed. Turns valve handle to direct flow of coolant or cutting oil against tool and work piece. Observes operation of machine and verifies conformance of machined work piece to specifications, using measuring instruments, such as fixed gauges, calipers, and micrometers. Operates bench grinder to sharpen tools. May set up and operate machines and equipment other than machine tools, such as welding machines and flame-cutting equipment. [-] Less

Prepares and operates variety of milling machines to mill flat or curved surfaces on metal work pieces, such as machine, tool, or die parts, analyzing specifications, and selecting tooling, according to knowledge of milling procedures. Examines blueprints or layout on... [+] More

Prepares and operates variety of milling machines to mill flat or curved surfaces on metal work pieces, such as machine, tool, or die parts, analyzing specifications, and selecting tooling, according to knowledge of milling procedures. Examines blueprints or layout on work piece to determine sequence of operations and finished dimensions of work piece.

Lifts and positions work piece on machine table, manually or with hoist, and secures it, using clamps, bolts, or fixtures. Selects feed rate, cutting speed, depth of cut, and milling cutter, applying knowledge of metal properties and shop mathematics. Mounts milling cutter in spindle, and positions cutter and work piece in relation to each other. Verifies alignment of work piece, using measuring instruments, such as dial indicator and thickness gauge. Turns handwheel to feed work piece to cutter or vice versa. Turns valve handle to start flow of coolant or lubricant on work area, starts machine, and engages automatic feed. May compute indexing ratios and set up and operate dividing head to index work piece for such operations as milling helical cuts. May mount different tool in place of cutter and perform other operations, such as drilling and boring. May set up and operate attachments, such as pantograph mechanism to duplicate contours from models or profiles from templates, or universal head to mill at angles. May mill nonmetallic materials. [-] Less

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Prepares and operates numerical control machines or machining centers to perform various machine functions, such as cutting, drilling, milling, reaming, boring, and broaching of metallic and nonmetallic work pieces, utilizing knowledge of machine tool capabilities, machinability of materials, and shop math. Reads and follows blueprints, planning sheets, sketches, and related technical data to determine tooling requirements, setup procedures, control settings, and machining methods and sequences.

Mounts, aligns, and secures tooling, attachments, and work piece on machine. Selects and installs cutting tools in machine spindle. Loads control media, such as tape, card, or disk, in machine controller or enters commands to retrieve preprogrammed instructions from database. Calculates and sets machine controls to position spindle in relationship to work piece and to regulate factors, such as cutting depth, speed, feed, and coolant flow. Starts machine and monitors displays and machine operation to detect malfunctions. Stops machine to change cutting tools and setup according to required machining sequence or to measure parts for conformance to blueprint specifications, using precision measuring instruments. Enters commands or manually adjusts machine controls to correct malfunctions or out-of-tolerance machining. Operates machine manually to perform nonautomated functions and when automatic programming is faulty or machine malfunctions. Discusses control media errors with supervisor or programming personnel to resolve problems. May clean machine, tooling, and parts. May perform machine maintenance. [-] Less

Prepares and installs dies into power presses to punch, notch, cut blanks, form or draw metal plates, strips, sheets, or blanks. Positions, aligns, and locks specified dies into machine ram and bed. Sets stops, guides, or installs jigs or fixtures... [+] More

Prepares and installs dies into power presses to punch, notch, cut blanks, form or draw metal plates, strips, sheets, or blanks. Positions, aligns, and locks specified dies into machine ram and bed. Sets stops, guides, or installs jigs or fixtures for positioning work piece. Adjusts depth and pressure of stroke.

Operates press machine to verify functioning of dies. Examines stamped out metal parts to detect malfunctioning machine and defect in dies. May sharpen dies, using grinding machine. May assemble, align, and install progressive dies. May set up automatic punch presses. [-] Less

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Prepares and operates machine to form longitudinal bends, beads, rolls, or embossed designs into sheet metal strips by drawing strips through one or more sets of roller dies to fabricate such items as molding trim or weather-strip.

Bolts specified dies onto spindles. Positions spindles to align male and female dies and to adjust dies and drive rolls to thickness of metal strip. Guides flow of coolant onto work piece or fills oil cups. Turns machine over to roll forming machine operator. [-] Less

Prepares and operates table, bench, jig, hand, friction circular, and hacksawing machines to slot, groove, miter, and trim metallic and nonmetallic stock. Installs specified saw blade in machine, using hand tools. Turns controls to set cutting speed, feed rate, blade... [+] More

Prepares and operates table, bench, jig, hand, friction circular, and hacksawing machines to slot, groove, miter, and trim metallic and nonmetallic stock. Installs specified saw blade in machine, using hand tools. Turns controls to set cutting speed, feed rate, blade tension, and to adjust tilt of blade on table.

Positions stock guides, stops, and holding blocks, using hand tools and measuring devices, to secure and direct stock. Places stock on table or in feed device, manually or using hoist, and starts saw to cut stock. Manipulates stock under saw to cut along layout lines. [-] Less