Nachiarkoil in Thanjavur is a famous cemtre for metal-casting primarily because of the rich source of sand found on the banks of the Kavery River...
Tanjore Metal Plates of Tamil Nadu
The creation of the Tanjore metal plate is credited to Raja Serfoji II (1797-1832), the Maratha ruler of Thanjavur (or Tanjore), who asked his royal artisans to create an object that would reflect the glory of his kingdom. Silver, brass, and copper are encrusted on to each other to create this stunning piece of art. The effect of silver in high relief on the reddish copper ground is unusual and striking. Artisans of the Vishwakarma community follow this hereditary profession in Thanjavur (Tamil Nadu).
This metal plate has as its base a plate of brass prepared by a heavy-metal worker";" the relief on copper is worked upon by a jeweller while the encrusting is done by a stone-setter with silver. All the three processes could even be carried out by a single craftsman also. The tools involved include hammers, pincers, moulds, punches, chisels, grinding stones and a forge.
The first stage involves cutting the base to the size of plate planned and polishing its front side. It is then fixed firmly to an asphalt bed with a wooden base which is then heated with a blow pipe and levelled so that the basic design die is prepared. The silver and copper sheets are then cut to the size, heated slightly before being cast into an impression on to the die. The impression thus achieved is finished by etching and refining the embossing with the aid of chisels and punches.
The next stage involves encrusting and superimposing the metal sheet(s). This is done by filling with wax made of brick powder, gingili oil, and frankincense the hollow depressions at the back of the relief sheet. The relief sheet is then placed on the base plate and riveted on by punching along the grooves. This is then followed by the final polishing.
Designs on the central circular metallic disc may include a representation of deities like Nataraja, Saraswati, Ashta Lakshmi and Ganapaty while the designs around the central motif can be from the pantheon of Hindu deities or floral designs. Besides plates, other products such as bowls, boxes, key chains and paper weights are made using the same technique.ns, and paper weights --- are made using the same technique. Logos and emblems of corporate houses and organisations have also been embossed.