{"id":5329,"date":"2025-10-08T11:45:20","date_gmt":"2025-10-08T08:45:20","guid":{"rendered":"https:\/\/jnats.eu\/?post_type=product&#038;p=5329"},"modified":"2026-04-16T09:36:05","modified_gmt":"2026-04-16T06:36:05","slug":"ohira-uchigumori-naturalus-japoniskas-galandinimo-akmuo-%e5%86%85%e6%9b%87%e7%a0%a5","status":"publish","type":"product","link":"https:\/\/jnats.eu\/en\/product-2\/ohira-uchigumori-naturalus-japoniskas-galandinimo-akmuo-%e5%86%85%e6%9b%87%e7%a0%a5\/","title":{"rendered":"Ohira Uchigumori - natural Japanese sharpening whetstone (\u5185\u66c7\u7825)"},"content":{"rendered":"<p>High quality <strong>Uchigumori Natural Japanese<\/strong> a stone quarried from the famous <strong>Ohira<\/strong> quarry in Kyoto, Japan. These stones are traditionally used <strong>final finishing and polishing of blades<\/strong>, especially for Japanese forged knives, swords and high-end tools.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"video-container\"><iframe title=\"Ohira Uchigumori Stone - Legendary Japanese Finishing WhetStone\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/TtPEvr_U_To?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p>\"Uchigumori stones are famous for their <strong>a delicate grinding sensation<\/strong> and the ability to create unique <strong>kasumi (fog)<\/strong> or <strong>blurred contrast<\/strong> between the harder steel of the blade and the softer side, which is highly appreciated by professional craftsmen and knife enthusiasts.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Characteristics:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83c\uddef\ud83c\uddf5 <strong>Origin:<\/strong> Ohira, Kyoto Prefecture, Japan<\/li>\n\n\n\n<li>\ud83e\udea8 <strong>Type:<\/strong> Natural Japanese water stone (Uchigumori - \u5185\u66c7\u7825)<\/li>\n\n\n\n<li>\ud83c\udf3f <strong>Uses:<\/strong> Final polishing (finishing stone)<\/li>\n\n\n\n<li>\u2728 <strong>Roughness:<\/strong> Approximately 6000-8000+ (natural, not standardised)<\/li>\n\n\n\n<li>\ud83e\uddf1 <strong>Hardness:<\/strong> Medium to soft (depending on the piece)<\/li>\n\n\n\n<li>\ud83d\udca7 Use with water only, no oil<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Features:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Creates a classic <strong>kasumi effect<\/strong> on a Japanese blade<\/li>\n\n\n\n<li>Very soft sharpening sensation, controlled abrasive<\/li>\n\n\n\n<li>Suitable for both professionals and collectors seeking an authentic Japanese finish<\/li>\n\n\n\n<li>Each stone is <strong>a unique piece<\/strong>, with a distinctive texture and structure<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\ud83d\udcdd <strong>Remark:<\/strong> Uchigumori stones are often used in combination with nagura (a finer auxiliary stone) to form a slurry layer that improves the polishing effect. Due to their natural nature, they can be <strong>minor cracks, layering or natural inclusions<\/strong>not affecting use.<\/p>","protected":false},"excerpt":{"rendered":"<ul>\n<li>Suitable for polishing knives and other tools as well as sharpening<\/li>\n<li>Dimensions and weight approximately:<\/li>\n<li>1: 205x60x56 mm. 1750 g.<\/li>\n<li>2: 204x75x45 mm. 1810 g.<\/li>\n<li>3: 208x71x57 mm. 2170 g.<\/li>\n<li>Hardness: Lv 4. Much harder than the classic Ohira Uchigumori, very reminiscent of the Mizukihara analogues.<\/li>\n<li>The surface is not entirely smooth, only part of it is ready for use. We can smooth the whole surface if you wish, but this will reduce the weight by a few dozen grams.<\/li>\n<li><strong>The smallest has a \"toxic\" line.<\/strong><\/li>\n<\/ul>","protected":false},"featured_media":5330,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[22],"product_tag":[47,193],"class_list":{"0":"post-5329","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-jnats","7":"product_tag-ohira","8":"product_tag-uchigumori","9":"product_shipping_class-iprastas","11":"first","12":"instock","13":"shipping-taxable","14":"purchasable","15":"product-type-variable"},"_links":{"self":[{"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/product\/5329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/comments?post=5329"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/media\/5330"}],"wp:attachment":[{"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/media?parent=5329"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/product_brand?post=5329"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/product_cat?post=5329"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/product_tag?post=5329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}