{"product_id":"nubatama-ume-25-xxxc-black-aratae-hard","title":"Nubatama Ume #25 (XXXC Black Aratae) HARD","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cblockquote style=\"border-left: 4px solid #333; margin: 0 0 20px 0; padding: 10px 15px; background-color: #f9f9f9;\"\u003e\n\u003cstrong\u003eWhy You Need This Stone:\u003c\/strong\u003e The #25 grit HARD variant is designed for maximum dish-resistance during extreme metal removal and heavy edge repair. Built in a substantial 50mm \"brick\" profile for exceptional lifespan under heavy shop use, this extra-extra-extra coarse (XXXC) stone allows you to reshape damaged blades, grind out major chips, and thin heavy stock rapidly without the surface rounding or dishing out under firm pressure.\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eBuy This Stone If:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYou need an extremely aggressive, fast-cutting coarse stone that maintains flat surface geometry during heavy grinding.\u003c\/li\u003e\n\u003cli\u003eYou want the massive height and long working life of a 50mm brick profile for high-volume shop work.\u003c\/li\u003e\n\u003cli\u003eYou are performing extensive thinning or chip repair where point-pressure would cause softer coarse stones to dish quickly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Nubatama\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrit:\u003c\/strong\u003e #25 (Extra-Extra-Extra Coarse \/ XXXC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Ume (Black Aratae)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Soaking \/ Semi-Soaking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions \/ Profile:\u003c\/strong\u003e 210 x 75 x 50mm Brick\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBinder Hardness:\u003c\/strong\u003e Hard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ken Schwartz Estate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eNotes \u0026amp; Usage\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Tasks:\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eGrinding out deep edge chips, broken tips, and major bevel damage.\u003c\/li\u003e\n\u003cli\u003eAggressive thinning behind the edge on thick tool steel, heavy kitchen cutlery, or outdoor blades.\u003c\/li\u003e\n\u003cli\u003eEstablishing initial primary bevels on raw forged blanks or severely out-of-spec edges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Action \u0026amp; Speed:\u003c\/strong\u003e Uses large, coarse silicon carbide particles locked in a firm, wear-resistant binder. It cuts rapidly while releasing minimal surface mud, keeping the contact face flat under heavy hand pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Feedback:\u003c\/strong\u003e Provides a crisp, firm, and highly tactile feel. The hard bond gives immediate resistance feedback, making it easier to keep primary bevel lines straight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Compatibility:\u003c\/strong\u003e Works effectively across all steel types, including hard carbon steels, high-alloy tool steels, and wear-resistant stainless.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProgression Ideas\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreceding Step (Lower Grit):\u003c\/strong\u003e None (this represents the coarsest bench stone step for heavy manual grinding).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFollowing Step (Higher Grit):\u003c\/strong\u003e Nubatama Ume #120 or Bamboo #150 (to refine the aggressive #25 deep scratch pattern before moving into medium repair grits).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlso Consider\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor a Softer \/ More Slurrying Feel:\u003c\/strong\u003e If you prefer a stone that generates a rich, dark slurry more readily for wide-bevel blending, consider the \u003cstrong\u003eNubatama Ume #25 Standard\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEssential Maintenance:\u003c\/strong\u003e Pair with an extra-coarse diamond flattening plate (e.g., 140 grit) to keep the hard surface dressed and clean during intensive grinding sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCondition\u003c\/h4\u003e\n\u003cp\u003eNew in original factory box and packaging. Due to long-term storage (5+ years), outer boxes and paper wrapping may show minor shelf wear or scuffing.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: Photos represent our stock inventory for this stone; individual box wear or color tone may vary slightly from the unit pictured. Reference objects (rulers, coins) are for scale only and are not included.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Pacific Waterstone","offers":[{"title":"Default Title","offer_id":48045175832734,"sku":"NUB-UME-25H-INDIVIDUAL-1","price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/1386\/4862\/files\/ume_logo.png?v=1785129107","url":"https:\/\/pacificwaterstone.com\/products\/nubatama-ume-25-xxxc-black-aratae-hard","provider":"Pacific Waterstone","version":"1.0","type":"link"}