Open die forging is the process, which involves the shaping of any hot metal parts. This is done with a top die that is attached to a ram and the bottom die gets attached to a hammer or bolster. Metal parts need to have appropriate temperatures, somewhere in the range of 500°F to 2400°F. These can then be shaped into the desired configuration with the help of skillful hammering or even by applying pressure to the workpiece. Sometimes, open die forging is also referred to as free forging or impression die forging. The metal is constantly hammered and stamped to finally achieve a certain set of dimensions within the open die forging process.