{"product_id":"nubatama-ume-1500-platinum","title":"Nubatama Ume #1500 (Platinum)","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 Platinum #1500 formulation represents a premium upgrade in abrasive density and speed, bridging medium edge setting and fine refinement. Formulated to cut rapidly across complex, high-vanadium powdered steels without loading or glazed resistance, this stone leaves a refined, silky apex that cuts effortlessly while setting up higher-grit mirror polishes.\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003eBuy This Stone If:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYou sharpen advanced powdered metallurgy steels (SG2, ZDP-189, CPM-S90V) or hard tool steels.\u003c\/li\u003e\n\u003cli\u003eYou want a fast, high-density medium-fine stone that resists loading.\u003c\/li\u003e\n\u003cli\u003eYou seek an elevated performance stone from the Ken Schwartz Estate collection.\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 #1500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Ume (Platinum Formulation)\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 30mm Flat\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\u003eRefining medium 1k scratch patterns into an keen, silky edge.\u003c\/li\u003e\n\u003cli\u003eSingle-stone maintenance on working kitchen knives requiring balanced tooth and push-cut capability.\u003c\/li\u003e\n\u003cli\u003ePrecision apex refinement on wear-resistant alloy blades.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Action \u0026amp; Speed:\u003c\/strong\u003e High abrasive density maintains rapid metal removal with zero drag or glazing under light pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Feedback:\u003c\/strong\u003e Smooth, highly detailed feedback allowing precise angle control along the edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Compatibility:\u003c\/strong\u003e Optimized for modern powdered steels, high-carbon Japanese steels, and stainless cutlery.\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 Nubatama Ume #320 or #1000 (for initial edge setting prior to #1500 refinement).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFollowing Step (Higher Grit):\u003c\/strong\u003e Nubatama Platinum #4000 or Ume #6000 (for near-mirror polish and razor refinement).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlso Consider\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Standard Steels:\u003c\/strong\u003e Consider the \u003cstrong\u003eNubatama Ume #1000 Standard\u003c\/strong\u003e or \u003cstrong\u003eH\u003c\/strong\u003e for standard carbon\/stainless cutlery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEssential Maintenance:\u003c\/strong\u003e Dress with a diamond plate or fine Nagura to keep the surface active.\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":48045196148894,"sku":"NUB-UME-1500-INDIVIDUAL-1","price":136.85,"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-1500-platinum","provider":"Pacific Waterstone","version":"1.0","type":"link"}