Stamping parts and castings, forging compared to a thin, uniform, light, strong features. Stamping can be made by other methods difficult to manufacture with a stiffener, ribs, undulating or flanging of the workpiece to improve its rigidity. As a result of precision molds, the workpiece accuracy of up to micron level, and repeat high precision, consistent specifications, you can punch out the hole nest, convex and so on.