The blade of a circular saw which is a power saw, has a rotary motion and spins around an arbor and it is used for cutting different materials. Because working with circular saws is easy, it became a popular tool in carpentry and building industry. The user won't have to move the work piece as he is cutting it and it is also easy to carry around. Many materials could be cut with this tool such as wood,metal, plastic and masonry depending on the blade selected. With Circular saws you can make straight cuts quickly, also bevel cuts are possible with this saw. It is possible for the user to adjust the depth and the height of the blade.