History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c14.s3.6

v1.c14.s3.6

Then the required amounts of molten metal were probably poured into circular shaped moulds of regulated sizes.¹⁰ The blanks produced for the moulds could be heated and worked upon by hammering, etc., for achieving the required thickness and for destroying the brittle cast structure of their grains and thereby making them conducive to receiving the blow at the time of striking. Alternatively, the molten metal (mixed with alloying material) could have been cast into sheets or plates, which could be heated and worked upon and finally cut into round pieces of the size of the coined money.