The electric saw is a portable mechanical machine used in craft and industrial projects. The power tool consists of durable blades, chains, cables, ropes, etc. It is mainly used for large rooms. It can cut wood, plastic, metal, concrete and other materials such as tiles and bricks. A circular saw is an electric saw that spins with a flat round blade to cut wood, metal, or plastic depending on the specific blade. Circular saws have an on / off switch or button to hold the blade in place. There are two types of electric circular saw, the infinite screw and the side screw. The helical saw has enough torque to cut wet wood and concrete.