Copperware - Vellore
On the copper sheet the required sizes are marked (impression of the required dimension) with help of a metal compass, measuring scale and tape, then the marked sheets are cut with the shearing machine of the required length. The metal sheet is hammered with the different size of hammers and mallets in order to obtain a flat surface and passed through a pair of rollers and bent to the required shape. After obtaining the required shape the edges are joined together by dipping the metal in a mixture of brass powder solution and heat is applied to this through the welding machine. The extruded parts are cut with the metal cutting scissor and hammered on the welded parts to remove the excess of metal welded.
Each part is made separately and then joined to obtain the final product. Once the final product is obtained the inner surface is washed with acid and tamarind thoroughly and kept in sunlight for drying. The Eyum (powder for melting) is sprinkled on the inner surface of the vessel and heated for some time. By rotating the vessel uniformly, fluid spreads to the inner surface. Aluminium strip is used for coating the inner surface in the same temperature. Used engine oil is applied on the outer surface of the vessel for finishing operation with the help of pointed/sharp edged tools.
