Ohira Uchigumori Stone – Legendary Japanese Finishing WhetStone

Experience the legendary Ohira Uchigumori natural finishing stone from Kyoto, Japan. This traditional waterstone is renowned for producing the classic kasumi (mist) finish on Japanese blades — a subtle contrast between the hard hagane and soft jigane steel. In this video, we demonstrate the feel, slurry formation, and polishing effect of this exceptional stone. Perfect for Japanese knives, swords, and fine tools. Details: Origin: Ohira quarry, Kyoto Type: Uchigumori (内曇砥) natural waterstone Grit: ~6000–8000+ (natural) Finish: Kasumi, soft polish Use: Final polishing stage Traditional technique. Only water, no oil. 100% natural stone.