Metal brake shear operates on the principle of applying a force to a metal sheet until it fractures along a straight line. The machine consists of two main parts a fixed blade and a moving blade. When the moving blade descends, it exerts pressure onto the metal sheet placed between the two blades, creating a cutting action. The efficiency of this process hinges on the careful calibration of several factors, including blade sharpness, clearance, and the type of metal being sheared.