Many commercial metalworkers are involved in the manufacturing, building and repairing of products and structures made from sheet metal. Sheet metal can be used in metal ducts, building exteriors, garages, metal channels or gutters, furnaces and even in some modern or hi-tech furniture or decorative features. Workers are often required to shape, bend, weld, connect or cut metal sheets in order to perform their work. To this end, they use a wide variety of tools in order to provide a variety of shaped metal supplies.
Welders are used to join metal sections, and when done properly the connection is extremely difficult to break. There are three main varieties of metal welders; arc welders (sometimes called stick welders), wire feed welders and oxy-acetylene welders. Using these devices properly requires a substantial amount of training and safety equipment including eye shields, protective clothing and gloves.
Shears are used to cut metal sheets. Sometimes these are electrical equipment, or hand tools which can be used to make smaller cuts or trims. Very large sheet metal shears are kept in the workshop and may be pedal operated for ease, with hydraulic controls. Hand shears are normally more portable, like heavy duty scissors or cordless power tools or power saws which can be carried to a construction site for use in repairs or last minute alterations.
Hammers are commonly used in more or less every construction occupation which can be used to flatten metal bars, remove rivets or add patterns and texture metals. Metal working normally uses soft faces to avoid damaging the metal finish.
Hand notchers are similar to shears as they are used to cut metal sheets, but they are more precise and make cuts that give more precise metal shapes. Because of this they are manual metalworking tools rather than power tools.