https://apnews.com/article/lifestyle-business-052d5aa41ccc75760565e5cdef5cfc67
How Are Japanese Knife Made?

The side of a Japanese Cooks knife is helped make through knocking the cutter from thick portions of steel. Home heating and working is duplicated to roughen the blade as well as support create its own side. During this procedure the steel is remarkably elastic, permitting the master craftsman to deliver the shapes in his mind to the type within the fiery mineral. Through the procedure of quenching, cooling, and also annealing, every measure is actually painstakingly accounted for. A small misstep might induce an inequality of solidity as well as elasticity, which would make the knife to chip and crack. As well as nobody really wants that. Not the craftsmens, not you or me, not the food items.