Screen Specialists Inc

Carpenters construct and repair building frameworks and structures--such as stairways, doorframes, partitions, and rafters--made from wood and other materials. They also may install kitchen cabinets, siding, and drywall.

Carpenters typically do the following:

• Follow blueprints and building plans to meet the needs of clients
• Install structures and fixtures, such as windows and molding
• Measure, cut, or shape wood, plastic, fiberglass, drywall, and other materials
• Construct building frameworks, including wall studs, floor joists, and doorframes
• Help put up, level, and install building framework with the aid of large pulleys and cranes
• Inspect and replace damaged framework or other structures and fixtures
• Instruct and direct laborers and other construction trade helpers

Carpenters are one of the most versatile construction occupations, with workers usually doing a variety of tasks. For example, some carpenters insulate office buildings; others install drywall or kitchen cabinets in homes. Those who help construct large buildings or bridges often make the wooden concrete forms for cement footings or pillars. Some carpenters build braces and scaffolding for buildings.

Carpenters use many different hand and power tools to cut and shape wood, plastic, fiberglass, or drywall. They commonly use handtools, including squares, levels, and chisels, as well as many power tools, such as sanders, circular saws, and nail guns. Carpenters put materials together with nails, screws, staples, and adhesives, and do a final check of their work to ensure accuracy. They use a tape measure on every project because proper measuring increases productivity, reduces waste, and ensures that the pieces being cut are the proper size.

The following are types of carpenters:

Residential carpenters typically specialize in new-home, townhome, and condominium building and remodeling. As part of a single job, they might build and set forms for footings, walls and slabs, and frame and finish exterior walls, roofs, and decks. They frame interior walls, build stairs, and install drywall, crown molding, doors, and kitchen cabinets. Highly-skilled carpenters may also tile floors and lay wood floors and carpet. Fully-trained construction carpenters are easily able to switch from new-home building to remodeling.

Commercial carpenters typically remodel and help build commercial office buildings, hospitals, hotels, schools, and shopping malls. Some specialize in working with light gauge and load-bearing steel framing for interior partitions, exterior framing, and curtain wall construction. Others specialize in working with concrete forming systems and finishing interior and exterior walls, partitions, and ceilings. Highly skilled carpenters can usually do many of the same tasks as residential carpenters.

Industrial carpenters typically work in civil and industrial settings where they put up scaffolding and build and set forms for pouring concrete. Some industrial carpenters build tunnel bracing or partitions in underground passageways and mines to control the circulation of air to worksites. Others build concrete forms for tunnels, bridges, dams, power plants, or sewer construction projects.

Glaziers install glass in windows, skylights, storefronts, and display cases to create distinctive designs or reduce the need for artificial lighting.

Glaziers typically do the following:

• Follow blueprints or specifications for size, color, type, and thickness of glass to be used
• Remove any old or broken glass before installing replacement glass
• Cut glass to the specified size and shape
• Make or install sashes or moldings for glass installation
• Fasten glass into sashes or frames with clips, moldings, or other types of fasteners
• Add weather seal or putty around pane edges to seal joints

Glass has many uses in modern life. For example, insulated and specially treated glass keeps in warm or cool air and controls sound and condensation. Tempered and laminated glass makes doors and windows more secure. The creative use of large windows, glass doors, skylights, and sunroom additions makes buildings bright, airy, and inviting. Glaziers specialize in installing these different glass products.

In homes, glaziers install or replace windows, mirrors, shower doors, and bathtub enclosures. They fit glass for tabletops and display cases. On commercial interior projects, glaziers install items such as heavy, often etched, decorative room dividers or security windows. Glazing projects also may involve replacing storefront windows for supermarkets, auto dealerships, banks, and so on.

Workers who replace and repair glass in motor vehicles are not covered in this profile. For more information, see the profile on automotive body and glass repairers.  

For most large scale construction jobs, glass is precut and mounted into frames at a factory or a contractor's shop. The finished glass arrives at the jobsite ready for glaziers to position and secure into place. Using cranes or hoists with suction cups, workers lift large, heavy pieces of glass for installation. In cases where the glass is not secure inside the frame, glaziers may attach steel and aluminum sashes or frames to the building, and then secure the glass with clips, moldings, or other types of fasteners. 

A few glaziers work with plastics, granite, marble, and other materials used as glass substitutes.  Some work with films or laminates that improve the durability or safety of the glass.

Assemblers and fabricators assemble both finished products and the parts that go into them. They use tools, machines, and their hands to make engines, computers, aircraft, toys, electronic devices, and more.

Assemblers and fabricators typically do the following:

• Read and understand detailed schematics and blueprints
• Use hand tools or machines to assemble parts
• Conduct quality control checks
• Work closely with designers and engineers in product development 

Assemblers and fabricators have an important role in the manufacturing process. They assemble both finished products and the pieces that go into them. The products encompass a full range of manufactured products, including aircraft, toys, household appliances, automobiles, computers, and electronic devices.

Changes in technology have transformed the manufacturing and assembly process. Modern manufacturing systems use robots, computers, programmable motion-control devices, and various sensing technologies. These systems change the way in which goods are made and affect the jobs of those who make them. Advanced assemblers must be able to work with these new technologies and use them to produce goods.

The job of an assembler or fabricator ranges from very easy to very complicated, requiring a range of knowledge and skills. Skilled assemblers putting together complex machines, for example, read detailed schematics or blueprints that show how to assemble the machine. After determining how parts should connect, they use hand or power tools to trim, shim, cut, and make other adjustments to fit components together and align them properly. Once the parts are properly aligned, they connect them with bolts and screws or weld or solder pieces together.

Quality control is important throughout the assembly process, so assemblers look for faulty components and mistakes in the assembly process. They help to fix problems before defective products are made.

Manufacturing techniques are moving away from traditional assembly line systems toward lean manufacturing systems, which use teams of workers to produce entire products or components. Lean manufacturing has changed the nature of the assemblers' duties.

It has become more common to involve assemblers and fabricators in product development. Designers and engineers consult manufacturing workers during the design stage to improve product reliability and manufacturing efficiency. Some experienced assemblers work with designers and engineers to build prototypes or test products.

Although most assemblers and fabricators are classified as team assemblers, others specialize in producing one type of product or do the same or similar tasks throughout the assembly process.

The following are types of assemblers and fabricators:

Aircraft structure, surfaces, rigging, and systems assemblers fit, fasten, and install parts of airplanes, space vehicles, or missiles, such as wings, fuselage, landing gear, rigging and control equipment, or heating and ventilating systems.

Coil winders, tapers, and finishers wind wire coils of electrical components used in a variety of electric and electronic products, including resistors, transformers, generators, and electric motors.

Electrical and electronic equipment assemblers build products such as electric motors, computers, electronic control devices, and sensing equipment. Automated systems have been put in place because many small electronic parts are too small or fragile for human assembly. Much of the remaining work of electrical and electronic assemblers is done by hand during the small-scale production of electronic devices used in all types of aircraft, military systems, and medical equipment. Production by hand requires these workers to use devices such as soldering irons.

Electromechanical equipment assemblers assemble and modify electromechanical devices such as household appliances, computer tomography scanners, or vending machines. The workers use a variety of tools, such as rulers, rivet guns, and soldering irons.

Engine and machine assemblers construct, assemble, or rebuild engines, turbines, and machines used in automobiles, construction and mining equipment, and power generators.

Structural metal fabricators and fitters cut, align, and fit together structural metal parts and may help weld or rivet the parts together.

Fiberglass laminators and fabricators laminate layers of fiberglass on molds to form boat decks and hulls, bodies for golf carts, automobiles, or other products.

Team assemblers work on an assembly line, but they rotate through different tasks, rather than specializing in a single task. The team may decide how the work is assigned and how different tasks are done. Some aspects of lean production, such as rotating tasks and seeking worker input on improving the assembly process, are common to all assembly and fabrication occupations.

Timing device assemblers, adjusters, and calibrators do precision assembling or adjusting of timing devices within very narrow tolerances.

Sheet metal workers fabricate or install products that are made from thin metal sheets, such as ducts used for heating and air-conditioning.

Sheet metal workers typically do the following:

• Select types of sheet metal or nonmetallic material
• Measure and mark dimensions and reference lines on metal sheets
• Drill holes in metal, for screws, bolts, and rivets
• Install metal sheets with supportive frameworks
• Fabricate or alter parts at construction sites
• Maneuver large parts to be installed, and anchor the parts
• Fasten seams or joints by welding, bolting, riveting, or soldering

Sheet metal workers make, install, and maintain thin sheet metal products. Although sheet metal is used to make many products, such as rain gutters, outdoor signs, and siding, it is most commonly used to make ducts for heating and air-conditioning.

Sheet metal workers study plans and specifications to determine the kind and quantity of materials they will need. Using computer-controlled saws, lasers, shears, and presses, they measure, cut, bend, and fasten pieces of sheet metal.

In shops without computerized equipment, sheet metal workers make the required calculations and use tapes and rulers to lay out the work. Then, they cut or stamp the parts with machine tools.

In manufacturing plants, sheet metal workers program and operate computerized metalworking equipment. For example, they may make sheet metal parts for aircraft or industrial equipment. Sheet metal workers in those jobs may be responsible for programming the computer control systems of the equipment they operate.

Before assembling pieces, sheet metal workers check each part for accuracy. If necessary, they use hand, rotary, or squaring shears and hacksaws to finish pieces.

After inspecting the metal pieces, workers fasten seams and joints with welds, bolts, rivets, solder, or other connecting devices. Then they take the parts constructed in the shop and assemble the pieces further as they install them.

Most fabrication work is done in shops with some final assembly done on the job. Some jobs are done completely at the jobsite. When installing a metal roof, for example, sheet metal workers usually measure and cut the roofing panels onsite.

In addition to installing sheet metal, some workers install fiberglass and plastic board. 

In some shops and factories, sheet metal workers care for and maintain the equipment they use. 

Sheet metal workers do both construction-related work and the mass production of sheet metal products in manufacturing. Sheet metal workers are often separated into four specialties: fabrication, installation, maintenance, and testing and balancing. The following describes these types of sheet metal workers:

Fabrication sheet metal workers, sometimes called precision sheet metal workers, make ducts, gutters, and other metal products. Most work in shops and factories, operating tools and equipment. Although some of the fabrication techniques used in large-scale manufacturing are similar to those used in smaller shops, the work may be highly automated and repetitive. Many fabrication shops have automated machinery, and workers use computer-aided drafting (CAD) and building information modeling (BIM) systems to make products.

Installation sheet metal workers install heating, ventilation, and air-conditioning (HVAC) ducts. They also install other sheet metal products, such as metal roofs, siding, or gutters. They work on new construction and on renovation projects. 

Maintenance sheet metal workers repair and clean ventilation systems so the systems use less energy. Workers remove dust and moisture and fix leaks or breaks in the sheet metal that makes up the ductwork.

Testing and balancing sheet metal specialists ensure that HVAC systems heat and cool rooms properly. They ensure that hot and cold air is transferred through sheet metal ducts efficiently. For more information on workers who install or repair HVAC systems, see the profile on heating, air conditioning, and refrigeration mechanics and installers.

Metal and plastic machine workers set up and operate machines that cut, shape, and form metal and plastic materials or pieces.

Metal and plastic machine workers typically do the following:

• Set up machines and monitor them for unusual sound or vibration
• Lift material onto machines, manually or with a hoist
• Operate metal or plastic molding, casting, or coremaking machines
• Adjust the machines' speed and other settings
• Adjust cutting machine settings to account for irregularities
• Stop machines and remove finished products
• Test and measure finished products
• Remove and replace dull cutting tools
• Document production numbers in a computer database

Consumer products are made with many metal and plastic parts. These parts are produced by machines that are operated by metal and plastic machine workers. In general, these workers are separated into two groups: those who set up machines for operation and those who operate machines during production.

Although many workers both set up and operate the machines, some specialize in one of the following job types:

Machine setters, or setup workers, prepare the machines before production, perform test runs, and, if necessary, adjust and make minor repairs to the machinery before and during operation.

If, for example, the cutting tool inside a machine becomes dull after extended use, it is common for a setter to remove the tool, use a grinder or file to sharpen it, and place it back into the machine.

New tools are produced by tool and die makers. For more information, see the profile on machinists and tool and die makers.

After installing the tools into a machine, setup workers often produce the initial batch of goods, inspect the products, and turn the machine over to an operator.

Machine operators and tenders monitor the machinery during operation.

After a setter prepares a machine for production, an operator observes the machine and the products it produces. Operators may have to load the machine with materials for production or adjust the machine's speeds during production. They must periodically inspect the parts a machine produces. If they detect a minor problem, operators may fix it themselves. If the repair is more serious, they may have an industrial machinery mechanic fix it. For more information, see the profile on industrial machinery mechanics and maintenance workers. 

Setters, operators, and tenders usually are identified by the type of machine they work with. Job duties usually vary with the size of the manufacturer and the type of machine being operated. Although some workers specialize in one or two types of machinery, many are trained to set up or operate a variety of machines. Increasing automation allows machine setters to operate multiple machines at the same time.

In addition, newer production techniques, such as team-oriented “lean” manufacturing, require machine operators to rotate between different machines. Rotating assignments results in more varied work but also requires workers to have a wider range of skills.

The following are types of metal and plastic machine workers:

Computer-controlled machine tool operators, metal and plastic operate computer-controlled machines or robots to perform functions on metal or plastic workpieces.

Computer numerically controlled machine tool programmers, metal and plastic develop programs to control the machining or processing of metal or plastic parts by automatic machine tools, equipment, or systems.                                               

Extruding and drawing machine setters, operators, and tenders, metal and plastic set up or operate machines to extrude (pull out) or draw thermoplastic or metal materials into tubes, rods, hoses, wire, bars, or structural shapes. 

Forging machine setters, operators, and tenders, metal and plastic set up or operate machines that taper, shape, or form metal or plastic parts.

Rolling machine setters, operators, and tenders, metal and plastic set up or operate machines to roll steel or plastic or to flatten, temper, or reduce the thickness of material.

Cutting, punching, and press machine setters, operators, and tenders, metal and plastic set up or operate machines to saw, cut, shear, notch, bend, or straighten metal or plastic material.

Drilling and boring machine tool setters, operators, and tenders, metal and plastic set up or operate drilling machines to drill, bore, mill, or countersink metal or plastic workpieces.

Grinding, lapping, polishing, and buffing machine tool setters, operators, and tenders, metal and plastic set up or operate grinding and related tools that remove excess material from surfaces, sharpen edges or corners, or buff or polish metal or plastic workpieces.

Lathe and turning machine tool setters, operators, and tenders, metal and plastic set up or operate lathe and turning machines to turn, bore, thread, form, or face metal or plastic materials, such as wire or rod.

Milling and planing machine setters, operators, and tenders, metal and plastic set up or operate milling or planing machines to shape, groove, or profile metal or plastic workpieces.

Metal-refining furnace operators and tenders operate or tend furnaces, such as gas, oil, coal, electric-arc or electric induction, open-hearth or oxygen furnaces to melt and refine metal before casting or to produce specified types of steel.

Pourers and casters, metal operate hand-controlled mechanisms to pour and regulate the flow of molten metal into molds to produce castings or ingots.

Model makers, metal and plastic set up and operate machines, such as milling and engraving machines and jig borers, to make working models of metal or plastic objects.

Patternmakers, metal and plastic lay out, machine, fit, and assemble castings and parts to metal or plastic foundry patterns, coreboxes, or match plates.

Foundry mold and coremakers make or form wax or sand cores or molds used in the production of metal castings in foundries.

Molding, coremaking, and casting machine setters, operators, and tenders, metal and plastic set up or operate metal or plastic molding, casting, or coremaking machines to mold or cast metal or thermoplastic parts or products.

Multiple machine tool setters, operators, and tenders, metal and plastic set up or operate more than one type of cutting or forming machine tool or robot.

Welding, soldering, and brazing machine setters, operators, and tenders (including workers who operate laser cutters or laser-beam machines) set up or operate welding, soldering, or brazing machines or robots that weld, braze, solder, or heat treat metal products, components, or assemblies.

Heat treating equipment setters, operators, and tenders, metal and plastic set up or operate heating equipment, such as heat treating furnaces, flame-hardening machines, induction machines, soaking pits, or vacuum equipment, to temper, harden, anneal, or heat treat metal or plastic objects.

Plating and coating machine setters, operators, and tenders, metal and plastic set up or operate plating or coating machines to coat metal or plastic products with zinc, copper, nickel, or some other metal to protect or decorate surfaces (includes electrolytic processes).