- Abrasive saw
An abrasive saw (also called a "cutoff saw" or "metal chop saw", but not to be confused with the
miter saw, a woodworking tool also known by these names) is a power tool which is typically used to cut hard materials, such as metal pipe.
The cutting action is performed by an abrasive disc, similar to a thin
grinding wheel. An abrasive 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.
As with all power tools, wearing safety goggles or safety glasses and ear protection is a must when using an abrasive saw.
In addition to the eye hazard posed by flying
metalchips, an abrasive saw produces copious quantities of sparks. It should be kept well away from flammable materials while in use, and should never be used in an atmospherewhere explosive vapors (such as those from gasoline) may be present.
The thin abrasive disc can shatter if stressed or damaged. Always cut with the edge (circumference) of the blade. Never press a workpiece against the side of the blade.
To help avoid injury should the abrasive cutoff wheel shatter, never operate the tool without the safety guard in place and fully operational.
Metal cut off "chop" saws are classed as being slow
speedmachines. The disks are clearly marked as being such with either the maximum no load RPM of 4800, or the maximum of 4800 M/min. clearly printed on them. They should not be used in higher speed machines.The abrasive disks for these saws are typically 14", 355mm diameter. During operation the blade wears down to a size where it is unusable, and a new disk is used. The thickness of the disks are typically 7/64" or 2.8mm.Larger machines than the ones pictured here take 410mm disks.Disks are available for steel and stainless steel.
Since their introduction, portable metal cutoff saws have made many building site jobs easier. With these saws, lightweight steel fabrication previously performed in workshops using stationary power
band saws or cold saws can be done on-site. Abrasive saws have replaced more expensive and hazardous acetylene torches in many applications, such as cutting rebar.
* [http://www.builderbill-diy-help.com/chop-saw.html Using a metal chop saw.]
Wikimedia Foundation. 2010.
Look at other dictionaries:
Saw — For other uses, see Saw (disambiguation). Saw A crosscut hand saw about 620 mm (24 inches) long Classification Cutting Types Hand saw Back saw Bow saw Circular saw … Wikipedia
Abrasive machining — is a manufacturing process where material is removed from a workpiece using a multitude of small abrasive particles. Common examples include grinding, honing, and polishing. Abrasive processes are usually expensive, but capable of tighter… … Wikipedia
Saw Robot — is an industrial robot application for natural stone kitchen Countertop industry combining waterjet and saw. It is part of the Stone Automation Oys Intelligent Stone Fabrication Production LinesTM. Stone Automation Oy is a privately owned company … Wikipedia
abrasive — abrasively, adv. abrasiveness, n. /euh bray siv, ziv/, n. 1. any material or substance used for grinding, polishing, etc., as emery, pumice, or sandpaper. adj. 2. tending to abrade; causing abrasion; abrading. 3. tending to annoy or cause ill… … Universalium
saw grass — noun : any of various sedges having the edges of the leaves set with minute sharp teeth: as a. : a European sedge (Cladium mariscus) b. : a sedge (C. jamaicensis) of southern United States and the West Indies compare razor grass * * * saw grass,… … Useful english dictionary
Cold saw — A 185 mm (7.3 in) hand held cold saw A cold saw bl … Wikipedia
Cut off saw — The terms cut off saw, cutoff saw, or chop saw can refer to two distinct classes of power tools. A miter saw, typically used in woodworking An abrasive saw, typically used to cut hard materials, such as metals or ceramics This disambiguation page … Wikipedia
Concrete saw — A concrete saw being readied for use. The man in the background is preparing the hose to deliver water to cool the saw, whilst the operator is moving the saw to the required position. A substantial engine powers the unit … Wikipedia
Wire saw — A wire saw A wire saw is a machine using a metal wire or cable for cutting. There are two types of wire saw machines: continuous (or endless or loop) and oscillating (or reciprocating). Sometimes the wire itself is referred to as a blade . The… … Wikipedia
Miter saw — A miter saw (also spelled mitre) is a saw used to make accurate crosscuts and miters in a workpiece. Contents 1 Manual miter saw 2 Power miter saw 2.1 Types 2.2 F … Wikipedia