Dhokra, which is non-ferrous metal casting using the lost-wax casting technique is one of the earliest known methods of metal casting. The craft dates back to pre- historic times of Mohenjo-Daro and Harappa civilizations. Dhokra/Bell metal is an alloy of nickel, brass and zinc that lends an antique appeal to casting. One of the earliest known lost wax artifacts is the dancing girl of Mohenjo-Daro.
The ‘Dhokra Damar’ are the traditional metal smiths of West Bengal and the tribe extends to Jharkhand and Orissa as well. Their technique of lost wax casting is named after their tribe, hence Dhokra metal casting. A few hundred years ago the Dhokras of Central and Eastern India traveled south as far as Kerala and north as far as Rajasthan and hence are now found all over India.