Kyoto’s finishing wheels fascinate the world──a miraculous fusion of miraculous geology and craftsman’s eye Finishing whetstone” determines the sharpness of kitchen knives, razors, chisels, planes, and other cutting tools. Among them, “Kyoto whetstones” are regarded as “exceptional” by sharpeners and chefs around the world. The Nakayama, Daitori, Okudono, and Shobutani areas in particular have produced “legendary” whetstones. Why is it that only Kyoto has...