Bell casting is the process of creating bells by pouring molten metal into a mold. Typically, the metal used is a mixture of copper and tin, which gives the bell its distinctive sound. The mold is often made from a mixture of sand and clay, allowing it to withstand the high temperatures of the molten metal. Once the metal cools and solidifies, the mold is removed to reveal the bell. The bell is then polished and tuned to achieve the desired pitch. This traditional craft has been practiced for centuries and is essential for producing bells used in churches, clock towers, and musical instruments.