History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c11.s1.t1.4

v1.c11.s1.t1.4

Most of them seem to have been made in two parts, the bottom and the top, and then joined together. For vessel fabrication they used sinking, raising and lapping, and for joining metal they used *running* on and riveting techniques (soldering was used only for noble metals). Metallographic examination shows that they resorted to open and closed casting, slow cooling of casting, annealing and cold work (Agrawal 1971; Agrawal et al. 1978b).