{"title":"Ken Schwartz Estate Collection","description":"\u003cdiv class=\"markdown markdown-main-panel enable-luminous-fast-follows enable-updated-hr-color md-content stronger tutor-markdown-rendering\" id=\"model-response-message-contentr_c65aca118b49f20d\" aria-busy=\"false\" aria-live=\"polite\" dir=\"ltr\"\u003e\n\u003cp data-path-to-node=\"0\"\u003e\u003cb data-path-to-node=\"0\" data-index-in-node=\"0\"\u003eKen Schwartz Estate Collection\u003c\/b\u003e waterstones represent an authentic library of professional sharpening tools from the personal inventory of late master sharpener Ken Schwartz. Curated specifically for knife makers, woodworkers, and razor enthusiasts, this collection features rare synthetic Nubatama series—including Bamboo, Ume, and Platinum lines—alongside hand-selected Japanese Natural Stones (JNATs). Offered directly from Ken’s estate, every stone honors his legacy, passion, and immense contributions to the sharpening community.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"nubatama-bamboo-1000-gold-youtube-demo-stone","title":"Nubatama Bamboo #1000 Gold - Youtube Demo Stone","description":"\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; line-height: 1.6; color: #333333; max-width: 800px; margin: 0 auto; padding: 20px;\" class=\"waterstone-article\"\u003e\n\u003ch1 style=\"font-size: 2em; border-bottom: 2px solid #2c3e50; padding-bottom: 8px; color: #1a252f; margin-bottom: 16px;\"\u003eNubatama 1000 Grit Waterstone Gold (Bamboo Series)\u003c\/h1\u003e\n\u003cp style=\"font-size: 1.05em; margin-bottom: 20px;\"\u003eThis is the exact stone Ken evaluated in his Youtube video entitled \"\u003ca style=\"color: #2980b9; text-decoration: none;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\" target=\"_blank\"\u003eNubatama 1000 grit Waterstone GOLD - Ume or Bamboo?- Now 1000 Grit Bamboo Gold\u003c\/a\u003e (YouTube)\".   This stone appears to only have been used in the evaluation video.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.05em; margin-bottom: 20px;\"\u003e\u003cbr\u003eThe \u003cstrong\u003eNubatama 1000 Grit Waterstone Gold\u003c\/strong\u003e (later finalized as the \u003cstrong\u003eNubatama 1000 Grit Bamboo Gold\u003c\/strong\u003e) is a synthetic ceramic waterstone distributed by Ken Schwartz of \u003cem\u003ePrecise Sharpening\u003c\/em\u003e and vendor \u003cem\u003eChef Knives To Go\u003c\/em\u003e. Designed as a fast-cutting medium-grit stone, it is primarily used for primary bevel setup, minor repairs, and edge restoration on high-carbon and stainless steel cutlery.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 24px 0;\"\u003e\n\u003ch2 style=\"font-size: 1.4em; color: #2c3e50; border-bottom: 1px solid #ddd; padding-bottom: 4px; margin-top: 24px;\"\u003eBackground and History\u003c\/h2\u003e\n\u003cp\u003eThe stone was introduced around 2012 by sharpener and distributor Ken Schwartz during the expansion of the \u003cem\u003eNubatama\u003c\/em\u003e series of Japanese synthetic waterstones. Initial evaluation units were distributed as uncategorized test models to evaluate user preferences between two proposed Nubatama sub-lines: \u003cem\u003eUme\u003c\/em\u003e and \u003cem\u003eBamboo\u003c\/em\u003e. Following positive field evaluations regarding its low-porosity binder and fast cutting speed, the stone was formally integrated into the line as the \u003cstrong\u003eNubatama 1000 Grit Bamboo Gold\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 24px 0;\"\u003e\n\u003ch2 style=\"font-size: 1.4em; color: #2c3e50; border-bottom: 1px solid #ddd; padding-bottom: 4px; margin-top: 24px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 16px 0;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003cth style=\"border: 1px solid #dddddd; text-align: left; padding: 10px; font-weight: bold;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #dddddd; text-align: left; padding: 10px; font-weight: bold;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003e\u003cstrong\u003eGrit Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003e1000 JIS (Medium \/ Bevel-Setting)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fcfcfc;\"\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003e\u003cstrong\u003eWater Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003eSplash-and-Go (Low Porosity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003e\u003cstrong\u003eAbrasion Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003eHigh \/ Aggressive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fcfcfc;\"\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003e\u003cstrong\u003eSlurry Production\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003eLow to Moderate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003e\u003cstrong\u003eClassification Line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 10px;\"\u003eNubatama Bamboo Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 24px 0;\"\u003e\n\u003ch2 style=\"font-size: 1.4em; color: #2c3e50; border-bottom: 1px solid #ddd; padding-bottom: 4px; margin-top: 24px;\"\u003ePhysical Characteristics and Performance\u003c\/h2\u003e\n\u003ch3 style=\"font-size: 1.15em; color: #34495e; margin-top: 16px;\"\u003eWater Absorption and Surface Properties\u003c\/h3\u003e\n\u003cp\u003eThe stone exhibits low open-cell porosity. Upon initial immersion or surface wetting, water absorption is slow, allowing the surface to hold moisture efficiently without rapid drying. Consequently, the stone operates as a \u003cstrong\u003esplash-and-go\u003c\/strong\u003e medium, requiring negligible pre-soaking compared to traditional magnesia- or clay-bonded waterstones.\u003c\/p\u003e\n\u003cp\u003eFactory-machined surfaces display a brief initial roughness that quickly wears away during the first sharpening pass, exposing a smooth, uniform working texture beneath.\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.15em; color: #34495e; margin-top: 16px;\"\u003eAbrasion and Feedback\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px; margin-bottom: 16px;\"\u003e\n\u003cli style=\"margin-bottom: 6px;\"\u003e\n\u003cstrong\u003eStock Removal:\u003c\/strong\u003e The stone is characterized by aggressive stock removal, generating heavy dark swarf immediately upon contact with hard cutlery steels.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 6px;\"\u003e\n\u003cstrong\u003eSlurry Dynamics:\u003c\/strong\u003e It produces minimal loose mud (slurry), relying primarily on the firm, exposed abrasive matrix to cut rather than loose abrasive slurry polishing.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 6px;\"\u003e\n\u003cstrong\u003eTactile Feedback:\u003c\/strong\u003e Provides distinct tactile and acoustic feedback, enabling the user to maintain a consistent sharpening angle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 24px 0;\"\u003e\n\u003ch2 style=\"font-size: 1.4em; color: #2c3e50; border-bottom: 1px solid #ddd; padding-bottom: 4px; margin-top: 24px;\"\u003eApplication and Usage\u003c\/h2\u003e\n\u003cp\u003eThe stone is intended for general sharpening, burr formation, and minor edge resetting. During testing on acute-angle kitchen knives (such as a \u003cem\u003eKikuchi\u003c\/em\u003e knife), the stone raised a consistent burr quickly.\u003c\/p\u003e\n\u003cp\u003eEdges finished on the Nubatama 1000 Gold display a clean, toothy micro-bevel characteristic of a true 1000-grit finish, capable of push-cutting paper and cleanly slicing flexible fibrous materials without requiring finer polishing stones.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 24px 0;\"\u003e\n\u003ch2 style=\"font-size: 1.4em; color: #2c3e50; border-bottom: 1px solid #ddd; padding-bottom: 4px; margin-top: 24px;\"\u003eSources \u0026amp; Key Video Timestamps\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary Source:\u003c\/strong\u003e \u003ca style=\"color: #2980b9; text-decoration: none;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\" target=\"_blank\"\u003eNubatama 1000 grit Waterstone GOLD - Ume or Bamboo?- Now 1000 Grit Bamboo Gold\u003c\/a\u003e (YouTube)\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.15em; color: #34495e; margin-top: 16px;\"\u003eKey Moments \u0026amp; References\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003ca style=\"color: #2980b9; text-decoration: none; font-family: monospace;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\u0026amp;t=0s\" target=\"_blank\"\u003e[00:00:00]\u003c\/a\u003e – Introduction of the prototype stone and initial call for feedback to categorize it into the \u003cem\u003eUme\u003c\/em\u003e or \u003cem\u003eBamboo\u003c\/em\u003e series.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003ca style=\"color: #2980b9; text-decoration: none; font-family: monospace;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\u0026amp;t=32s\" target=\"_blank\"\u003e[00:00:32]\u003c\/a\u003e – Initial water porosity test demonstrating slow draw\/absorption.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003ca style=\"color: #2980b9; text-decoration: none; font-family: monospace;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\u0026amp;t=58s\" target=\"_blank\"\u003e[00:00:58]\u003c\/a\u003e – Test sharpening begins on a Kikuchi knife at an acute angle; confirmation of splash-and-go behavior.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003ca style=\"color: #2980b9; text-decoration: none; font-family: monospace;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\u0026amp;t=105s\" target=\"_blank\"\u003e[00:01:45]\u003c\/a\u003e – Surface texture assessment noting initial factory roughness before self-smoothing.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003ca style=\"color: #2980b9; text-decoration: none; font-family: monospace;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\u0026amp;t=119s\" target=\"_blank\"\u003e[00:01:59]\u003c\/a\u003e – Rapid swarf generation demonstrating aggressive cutting speed.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003ca style=\"color: #2980b9; text-decoration: none; font-family: monospace;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\u0026amp;t=195s\" target=\"_blank\"\u003e[00:03:15]\u003c\/a\u003e – Evaluation of low slurry\/mud production during heavy use.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003ca style=\"color: #2980b9; text-decoration: none; font-family: monospace;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\u0026amp;t=227s\" target=\"_blank\"\u003e[00:03:47]\u003c\/a\u003e – Burr formation check and lateral strokes for deburring.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003ca style=\"color: #2980b9; text-decoration: none; font-family: monospace;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\u0026amp;t=265s\" target=\"_blank\"\u003e[00:04:25]\u003c\/a\u003e – Feedback evaluation noting smooth feel and acoustic feedback.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003ca style=\"color: #2980b9; text-decoration: none; font-family: monospace;\" href=\"https:\/\/www.youtube.com\/watch?v=dn0pQ2_wmEQ\u0026amp;t=309s\" target=\"_blank\"\u003e[00:05:09]\u003c\/a\u003e – Edge testing on rolled towels and paper push-cuts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pacific Waterstone","offers":[{"title":"Default Title","offer_id":48036203823262,"sku":null,"price":75.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/1386\/4862\/files\/20260725_145501.jpg?v=1785016754"}],"url":"https:\/\/pacificwaterstone.com\/collections\/ken-schwartz-estate-collection.oembed","provider":"Pacific Waterstone","version":"1.0","type":"link"}