Casting (metalworking)
In metalworking, casting is the act of pouring liquid metal in to a mold. When it hardens it is sometimes called a cast or casting.
Casting processes have been used for thousands of years. It is widely used for making sculptures, jewelry, weapons and tools.
Process
To cast iron, which is the most common material for casting, metal is first melted. It is then poured into a mold and let cool. After cooling, it may be grinded to become smooth, or hammered to become stronger.
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