If you are cutting a metal pipe, a metal Pipe Cutter must be used. This type of pipe cutter uses simple mechanics for a clean, fast cut through pipe that can be dense and rigid. Basically, two jaws grasp the pipe and hold a sharp circular blade in place. The blade then rotates around the metal pipe and tightens until it cuts all the way through. There are manual metal pipe cutters that must be turned by hand as well as powered versions, which will do all the work while a button is compressed. Most of the time, metal pipe cutters can also be used to cut through plastic pipes and tubing.