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. Circular sawing can be used to sever parts or produce narrow slots

Process Characteristics
Thin Circular blades with teeth are used on periphery
Rotating blade is taken and fed into a stationary workpiece
Produces a good surface finish and a narrow cut
Has good dimensional repeatability and accuracy
Unfortunately, burrs are usually produced, which needs to be removed

Process Schematic
While circular sawing, the workpiece usually is held in a vice, while the circular blade slowly advances into the work. Chips are produced by a succession of teeth arranged around the saw blade. Each tooth forms a chip as it goes through the workpiece. The chip is contained between two teeth until these teeth leave the workpiece.