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Circular Saws: Circular Saw Reviews, Best Circular Saw
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The circular saw is a metal disc or blade with saw teeth on the edge as well as the machine that causes the disk to spin. It is a tool for cutting wood or other materials and may be hand-held or table-mounted. While today they are almost exclusively powered by electricity, larger ones, such as those in "saw mills", were traditionally powered by water turning a large wheel. Most of these saws are designed to cut wood but may be equipped with blades designed to cut masonry, plastics or metal although there are purpose-made circular saws specially designed for particular materials.

Types of circular saw

In addition to hand-held circular saws (see below), different saws that use circular saw blades include:

* Miter saws (or Chop saw or Cut-off saw)
* Radial arm saws
* Saw mills
* Table saws
* Panel saws
* Biscuit joiners
* Pendulum saw
* Brushcutter

The term circular saw is most commonly

used to refer to a hand-held electric circular saw designed for cutting wood, which may be used less optimally for cutting other materials with the exchange of specific blades. Circular saws can be either left or right handed, depending on which side of the blade the motor sits.

Blades for timber are almost universally tungsten carbide tipped (TCT)[citation needed]. High speed steel (HSS) blades are also available. The saw base can be adjusted for depth of cut. Adjusting the depth of cut helps minimise kickback. The saw base can also be adjusted to tilt up to 50 degrees in relation to the blade.


The saw can be designed for the blade to mount directly to the motor's driveshaft (known colloquially as a sidewinder), or be driven indirectly by a perpendicularly-mounted motor via worm gears, garnering considerably higher torque (Worm-drive saws).[citation needed]

The worm-drive portable circular saw was invented in 1924 by the Michel Electric Handsaw Company which renamed itself Skilsaw Inc., today a subsidiary of Robert Bosch GmbH[5]. Portable circular saws are often still called Skilsaws or Skil saws. Its successor is still sold by Skil as the model 77[citation needed]. To get around the Skil patents[citation needed], Art Emmons of Porter-Cable invented the direct-drive sidewinder saw in 1928. Recently smaller cordless circular saws with rechargeable batteries have become popular.