{"id":6395,"date":"2026-07-01T12:13:39","date_gmt":"2026-07-01T09:13:39","guid":{"rendered":"https:\/\/jnats.eu\/?p=6395"},"modified":"2026-07-01T12:13:45","modified_gmt":"2026-07-01T09:13:45","slug":"jokyoji-dzokiodzi-japoniskas-galandinimo-akmuo","status":"publish","type":"post","link":"https:\/\/jnats.eu\/en\/jokyoji-dzokiodzi-japoniskas-galandinimo-akmuo\/","title":{"rendered":"J\u014dky\u014dji (Jokioji) Japanese sharpening stone"},"content":{"rendered":"

The Jokioji whetstone is a historic, natural \u201emedium-hardness whetstone\u201c quarried in Fukui Prefecture. It is said to have been discovered by the Asakura clan in Ichijodani during the Sengoku period. This stone is used for the primary sharpening stage and belongs to the highly regarded Akado (red whetstones) line.<\/p>\n\n\n\n

It is typically used after coarse and Bisui honing stones. Among these, high-quality Akado is considered the best J\u014dk\u014dji grade and is regarded by polishers as a top-quality product.<\/p>\n\n\n\n

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J\u014dky\u014dji (Jokioji), a natural Japanese whetstone, was used as the basis for preparing steel and defining its shape and lines even before the widespread use of Uchigumori. First and foremost, Akado is characterized by uniform abrasive grains, does not over-polish, and pairs perfectly with Uchigumori, which is why it is considered a whetstone highly valued by skilled sword and knife polishers.\u00a0Since stones are selected based on \u201eworkmanship\u201c rather than color, many high-quality stones found in the base layer have a reddish tint; therefore, Akato (red sharpening stone) is synonymous with the highest-quality J\u014dky\u014dji sharpening stones.<\/p>\n\n\n\n

Role in Intensive Polishing. The J\u014dky\u014dji sharpening stone (Akato) is an extremely important element that plays a decisive role in the final stage of primary polishing.\u00a0It refines and evens out the polishing marks left by the coarse and Bisui stones. This determines the final appearance of the shinogi-suji, habaki, and kissaki yokote lines. The J\u014dky\u014dji brings out the jigane and prepares the steel so that the uchigumori stone can work on it effectively.\u00a0<\/p>\n\n\n\n

A reddish-brown or dark reddish-purple layer rich in iron. Fine abrasive grains that are not too sharp and are durable. Excellent water retention, allowing the sharpener to operate stably. Does not grind, but rather highlights and shapes the appearance of the steel \u2013 It features the hardness and grip characteristic of natural whetstones, which cannot be achieved using modern artificial or semi-natural whetstones.<\/p>\n\n\n\n

Rarity and difficulty in acquisition. The J\u014dky\u014dji quarry is now practically depleted, and the extraction of new whetstones is considered nearly impossible.\u00a0High-quality red whetstones appear on the market very rarely because they are sought after by collectors of whetstone collections, are often old stock or remnants, and stones in good condition and of high quality are extremely rare.\u00a0In fact, owners rarely part with them, and they are sometimes treated as assets rather than tools.\u201c.<\/p>\n\n\n\n

Since this is a natural sharpening stone, layering, color variations, and minor scratches are to be expected\u2014it is not a substitute for hybrid or artificial sharpeners.\u00a0 This stone is intended for those who appreciate the art of sharpening swords and knives and gentle polishing.<\/p>","protected":false},"excerpt":{"rendered":"

D\u017eoki\u014dd\u017ei galandinimo akmuo yra istorinis nat\u016bralus \u201evidutinio kietumo gal\u0105stuvas\u201c, i\u0161gaunamas Fukui prefekt\u016broje. Sakoma, kad j\u012f I\u010did\u017eodani mieste atrado Asakur\u0173 klanas Sengoku laikotarpiu. \u012eis akmuo naudojamas pagrindiniam galandimo etapui, priklausantis labai vertinamai Akado (raudon\u0173j\u0173 gal\u0105stuv\u0173)\u00a0linijai. Paprastai naudojamas po grubi\u0173 ir Bisui Galandinimo akmen\u0173. I\u0161 j\u0173 auk\u0161tos kokyb\u0117s Akado laikomas geriausiu D\u017eoki\u014dd\u017ei sluoksniu ir tarp poliruotoj\u0173 laikomas […]<\/p>\n","protected":false},"author":1,"featured_media":6396,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[397,237],"class_list":["post-6395","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-akmenys","tag-jokyoji","tag-naturalus-akmenys"],"_links":{"self":[{"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/posts\/6395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/comments?post=6395"}],"version-history":[{"count":1,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/posts\/6395\/revisions"}],"predecessor-version":[{"id":6397,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/posts\/6395\/revisions\/6397"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/media\/6396"}],"wp:attachment":[{"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/media?parent=6395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/categories?post=6395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jnats.eu\/en\/wp-json\/wp\/v2\/tags?post=6395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}