Forging is surely the oldest known metalworking method. It can be called hot or cold forging by whether the metal temperature is above or below the recrystallization temperature.
It is a process where the professional models or deforms in a controlled manner the material to achieve the desired shape through compressive forces, intermittently or continuously. For this reason, forging requires two types of tools: presses and hammers. Presses can be mechanical and hydraulic. The hammers work by gravity drop or fall on.