History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c13.s2.t4.145

v1.c13.s2.t4.145

The Suśruta Saṃhitā has mentioned the process of carburization by applying a carbonaceous paste on the edge of the surgical knives and heating them to red hot condition, followed by hardening and tampering treatments to develop razor sharp edge (700 B.C.) which could split hair into two parts longitudinally.