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Glossary of TermsAbrasive cut off saw Also known as a metal chop saw. A power tool that is typically used to cut hard materials, such as metals. The cutting action is performed by an abrasive disc, similar to a thin grinding wheel. The saw has a built-in vise or other clamping arrangement and has the cutting wheel and motor mounted on a pivoting arm attached to a fixed base plate.Because the cutting action is done by an abrasive product – typically aluminum oxide, which is significantly harder than most steel – materials in excess of 60 Rockwell "C" scale can be cut abrasively. See also Chop saw and Cut off saw. Bandsaw A power tool that uses a blade consisting of a continuous band of metal with teeth along one edge to cut various workpieces. The band usually rides on two wheels rotating in the same plane, although some small bandsaws have three wheels. Bandsawing produces uniform cutting action as a result of an evenly distributed tooth load. Bandsaws are used for woodworking, metalworking or for cutting a variety of other materials and are particularly useful for cutting irregular or curved shapes but can also be used to produce straight cuts. The minimum radius of a curve that can be cut on a particular saw is determined by the width of the band and its lateral flexibility. Chop saw Also known as a metal chop saw. A power tool that is typically used to cut hard materials, such as metals. The cutting action is performed by an abrasive disc, similar to a thin grinding wheel. This metal saw generally has a built-in vise or other clamping arrangement and has the cutting wheel and motor mounted on a pivoting arm attached to a fixed base plate. See also Abrasive cut off saw and Cut off saw. Circular saw A machine that uses a toothed metal cutting disc or blade. The term is also loosely used for the blade itself. The blade is a tool for cutting metal or other non-metal materials and may be hand held or table mounted. It can also be used to make narrow slots. Most of these saws are designed with a blade to cut metal but may also be equipped with a blade designed to cut non-metal applications. Toothed blades are normally in the range of 32 Rockwell "C" scale and therefore are restricted from cutting harder materials such as linear bearings, files or case hardened shafts, etc. Cold saw A sawing machine that uses a circular saw blade to cut metal. The name "cold saw" comes from the cutting process it employs. This sawing machine transfers the heat generated by cutting to the chips created by the saw blade. Therefore, the blade and material being cut remain cold. Cold saw blade Circular metal cutting saw blade categorized into two types: solid HSS or tungsten carbide-tipped (TCT). Both types of blades are resharpenable and may be used many times before being discarded. Used to cut metal using a relatively slow rotational speed, usually less than 5000 surface feet per minute (SFM) (25m/s), and a high chip load per tooth, usually between .001" - .003" (0.025 - 0.08mm) per tooth. Cut off saw Also known as a metal chop saw. A power tool that is typically used to cut hard materials, such as metals. The cutting action is performed by an abrasive disc, similar to a thin grinding wheel. The saw has a built-in vise or other clamping arrangement and has the cutting wheel and motor mounted on a pivoting arm attached to a fixed base plate. See also Abrasive cut off saw and Chop saw. Miter saw A saw used to make accurate crosscuts and miters in a steel, metal or non-metal workpiece. Steel pipe cutting A mechanized cutting process that removes material from steel pipe to create a desired profile. Typical steel pipe profiles include straight cuts, mitres, saddles and mid-section holes. These complex cuts are usually required to allow a tight fit between two steel parts that are to be joined via arc welding. Steel shapes cutting A mechanized steel cutting process that removes material from metal materials to create a desired shape. Structural steel cutting A mechanized cutting process that removes material from steel construction that has been formed with a specific shape or cross section and certain standards of chemical composition and mechanical properties. Tube cutting A mechanized cutting process that removes material from steel tube to create a desired profile. Typical profiles include straight cuts, mitres, saddles and mid-section holes. These complex tube cuts are usually required to allow a tight fit between two parts that are to be joined via arc welding. Wet saw A metal cutting saw with a water-filled trough that pumps water over the material as it's being cut, preventing the material and the tool from overheating and helping to clear chips from the cutting area. Wire rope cutting The process of cutting wire rope with a hydraulic wire rope cutter. The key to cutting wire rope successfully lies in "seizing" the wire rope properly before making the cut. Seizing is the process of wrapping a smaller wire around a wire rope multiple times to bind the strands in place. Seizing must be equally placed on both sides of the point where the cut will be made, must have a sufficient number of coils and must be properly spaced and sized. Cut the wire rope between the two central seizings with the hydraulic wire rope saw. The process can also be accomplished with an abrasive saw and usually eliminates the need for seizing.
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