The Harappan civilization was witness to the practice of bronze casting on a large scale. The bronze sculptures were made using the vanishing wax technique. In this technique, wax idols were first coated with wet clay and then allowed to dry. The clay-coated idols were then heated, in which the wax inside was melted. The wax was then poured out through a small hole and the molten metal was poured inside the hollow mold. After the metal has cooled and gone, the clay coating is removed and a metal shape of the same size as the wax shape is prepared.
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