{"title":"Tomo Nagura","description":"\u003cp\u003eSlurry stones cut from the same stone as the base whetstone — used to raise slurry and condition the surface.\u003c\/p\u003e","products":[{"product_id":"natsuya-toma-nagura","title":"Natsuya Tomo Nagura","description":"\u003cp\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Japanese Natural Whetstone (Tennen Toishi) \/ Slurry Stone (Nagura).\u003cbr\u003e\u003cstrong\u003eOrigin \/ Mine:\u003c\/strong\u003e Natsuya (夏屋砥 — Natsuya-to), historically quarried in Iwate Prefecture, Northern Japan.\u003cbr\u003e\u003cstrong\u003eGrit Range:\u003c\/strong\u003e Medium-coarse to mid-grit Nakato. Comparable to approximately #800 – #1,500 grit synthetic depending on slurry breakdown and pressure).\u003cbr\u003e\u003cstrong\u003eStamps: \u003c\/strong\u003eThe main face features the handwritten-style calligraphy stamp 夏屋砥 (Natsuya-to), and the end face bears an oval inspection stamp 響 (Hibiki).\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eDescription \u0026amp; Evaluation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePhysical Specs:\u003c\/strong\u003e Approx. 46 mm × 32 mm × 25 mm, weighing 80 g.\u003cbr\u003e\u003cstrong\u003eForm \u0026amp; Condition:\u003c\/strong\u003e Uniform rectangular cut with cleanly beveled edges; pristine New Old Stock (NOS) condition. No structural fractures or toxic inclusions.\u003cbr\u003e\u003cstrong\u003eVisual Profile:\u003c\/strong\u003e Classic warm terracotta\/ochre base color with subtle lighter grain mottling and uniform porosity typical of Iwate dacite stone.\u003cbr\u003e\u003cstrong\u003ePerformance \/ Usage:\u003c\/strong\u003e Primarily utilized to raise fast-cutting slurry on medium-grit benchstones, dress\/deglaze stone surfaces..\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Dust Bowl Knives","offers":[{"title":"Default Title","offer_id":48026554105987,"sku":null,"price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/7320\/1283\/files\/32.png?v=1788008555"},{"product_id":"aoto-toma-nagura","title":"Hard  Aoto Tomo Nagura","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003eA dense, hard  Aoto (青砥) tomo nagura selected for medium-to-pre-finishing slurry generation, micro-bevel refinement, and targeted contrast work. Its fine, hard matrix releases a crisp mud that cleans up scratch patterns without muddying or dulling cladding lines.\u003cbr\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Natural Japanese Whetstone (JNAT) Tomo Nagura\u003cbr\u003eOrigin\/Layer: Aoto (青砥)\u003cbr\u003eWeight: 65 g\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e ~50 mm (L) × 30 mm (W) × (H)25 mm tapering to 5 mm \u003cbr\u003e\u003cstrong\u003eShape:\u003c\/strong\u003e Tapered wedge profile with lapped, ready-to-use working face\u003cbr\u003eEstimated Grit Equivalent: ~2,000 – 4,000 synthetic. (breaks down finer as slurry works)\u003cbr\u003e\u003cstrong\u003eStamps \u0026amp; Markings\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eFace Stamp:\u003c\/strong\u003e 中仕上砥 (Nakashiage-to) — Medium-finishing grade whetstone.\u003cbr\u003e\u003cstrong\u003eEnd Stamp:\u003c\/strong\u003e 響 (Hibiki) — artisan mark (\"Resonance\/Echo\").\u003cbr\u003e\u003cstrong\u003eCharacteristics \u0026amp; Performance\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTactile Feedback:\u003c\/strong\u003e Crisp and glassy on hard carbon cores; produces immediate cutting slurry when worked against a medium or hard base stone.\u003cbr\u003e\u003cstrong\u003eSlurry Behavior: \u003c\/strong\u003eGenerates a creamy, fast-cutting gray mud that breaks down steadily under pressure for edge polishing and toothy refined sharpness.\u003cbr\u003e\u003cstrong\u003eFinish: \u003c\/strong\u003eLeaves an even, semi-matte kasumi on soft steel cladding and a clean, scratch-free pre-polish on high-carbon core steel (O1, Shirogami, Aogami).\u003cbr\u003eRecommended Use: Raising pre-finish slurry on hard base stones, standalone finger-stone work for blade face detailing, or micro-bevel refinement on kitchen and field cutlery.\u003c\/p\u003e","brand":"Dust Bowl Knives","offers":[{"title":"Default Title","offer_id":48026666401923,"sku":null,"price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/7320\/1283\/files\/40.png?v=1788009570"},{"product_id":"binsui-toma-nagura-1500","title":"Amakusa Kumamoto Binsui (#1500) Tomo Nagura","description":"\u003cp\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eOrigin: \u003c\/strong\u003eAmakusa Islands, Kumamoto Prefecture, Kyushu, Japan.\u003cbr\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Binsui-to (備水砥) \/ Amakusa.\u003cbr\u003e\u003cstrong\u003eRole:\u003c\/strong\u003e Tomo Nagura \/ Slurry Stone (Medium\/Pre-finishing stage).\u003cbr\u003e\u003cstrong\u003eGrit Equivalence:\u003c\/strong\u003e comparable to ~#1,000–#1,500 synthetic. (Medium grit \/ Chu-to).\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eDescription \u0026amp; Physical Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e Approximately 40mm x 35mm x 32mm\u003cbr\u003eWeight: 105g (cuboid format).\u003cbr\u003e\u003cstrong\u003eVisual Characteristics:\u003c\/strong\u003e Distinctive banded stratification displaying pale cream\/off-white quartz-rich matrix interlayered with warm terracotta and iron-oxide \"tiger stripe\" (Tora-to) sediment patterns.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eStamps \u0026amp; Markings:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTop Face:\u003c\/strong\u003e inspection stamp 響 (Hibiki \/ Echo).\u003cbr\u003e\u003cstrong\u003eSide Face:\u003c\/strong\u003e Square grade stamp 中砥 #1500 (Chū-to \/ Medium stone #1500).\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eEvaluation \u0026amp; Performance Profile\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eHardness \u0026amp; Density: \u003c\/strong\u003eMedium-hard (approx. Lv 3 to 3.5). Holds form well under light-to-moderate rubbing pressure.\u003cbr\u003e\u003cstrong\u003eAbrasive Action:\u003c\/strong\u003e Friable sedimentary quartz\/silica grains break down smoothly under friction, producing a uniform, milky slurry. It functions exceptionally well to condition hard base stones, accelerate sharpening on medium\/pre-finish naturals, or clean steel swarf and loaded surfaces.\u003cbr\u003e\u003cstrong\u003eScratch Pattern \u0026amp; Finish: \u003c\/strong\u003eLeaves a soft, even, scratch-free matte kasumi haze across softer cladding (iron\/damascus) while establishing a clean, toothy micro-bevel on high-carbon core steels.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Dust Bowl Knives","offers":[{"title":"Default Title","offer_id":48027062075523,"sku":null,"price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/7320\/1283\/files\/BinsuiTomaNagura_1500.png?v=1788011864"},{"product_id":"swita-toma-nagura","title":"Hon-Swita Tomo Nagura #SN02820DS","description":"\u003cp\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eStrata \/ Layer:\u003c\/strong\u003e Hon-Suita (本巣板)\u003cbr\u003e\u003cstrong\u003eType: \u003c\/strong\u003eTomo Nagura (rubbing\/slurry stone)\u003cbr\u003e\u003cstrong\u003eMarkings:\u003c\/strong\u003e Clear black ink kanji stamp reading 本巣板 (Hon-Suita)\u003cbr\u003e\u003cstrong\u003eCharacteristics:\u003c\/strong\u003e Renge (蓮華) visible via subtle reddish-pink blossoming on the cream matrix, alongside natural crust\/skin (kawa).\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePhysical Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eDimensions \u0026amp; Weight:\u003c\/strong\u003e 83 grams; approximately L 28mm x W 75mm x H 35mm at its widest points.\u003cbr\u003e\u003cstrong\u003eForm Factor:\u003c\/strong\u003e Natural wedge\/triangular offcut with one flat, sawn working face and raw, bark-covered natural perimeter and reverse side.\u003cbr\u003e\u003cstrong\u003eColoration:\u003c\/strong\u003e Warm cream-to-tan base matrix accented with faint rose\/pink renge clouds and a deep oxidized brown\/black natural skin.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePerformance Evaluation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eSlurry Generation:\u003c\/strong\u003e Releases fast-cutting, friable abrasive particles that break down readily under light water and blade pressure.\u003cbr\u003e\u003cstrong\u003eFinish \u0026amp; Edge: \u003c\/strong\u003eExcellent for generating a rich, contrast-heavy kasumi (mist) finish on clad blades, highlighting iron cladding versus high-carbon core steel without severe micro-scratching.\u003cbr\u003e\u003cstrong\u003eErgonomics: \u003c\/strong\u003eCompact, finger-friendly shape suitable for raising a working slurry on bench stones or for direct small-area detail work, and tool touch-ups. Lacquer sealed, and lapped.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Dust Bowl Knives","offers":[{"title":"Default Title","offer_id":48027559166083,"sku":null,"price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/7320\/1283\/files\/51.png?v=1788014239"},{"product_id":"swita-toma-nagura-1","title":"Aizu-to Tomo Nagura","description":"\u003cp\u003e\u003cstrong\u003eClassification\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eOrigin \/ Type:\u003c\/strong\u003e Fukushima Prefecture (Aizu region), Japan; natural medium-to-fine polishing whetstone (Aizu-to \/ 會津砥).\u003cbr\u003e\u003cstrong\u003eRole:\u003c\/strong\u003e Tomo Nagura \/ Slurry Stone.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eMarkings:\u003c\/strong\u003e\u003cbr\u003eRectangular Stamp: 會津砥 (Aizu-to \/ Aizu Whetstone).\u003cbr\u003eCircular Stamp: 響 (Hibiki \/ \"Echo\" or \"Resonance\", (inspection mark).\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eEvaluation \u0026amp; Characteristics\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eGrit Range: \u003c\/strong\u003eEquivalent to ~3,000–5,000 JIS when generating fresh slurry; refines down significantly as particles break down during work.\u003cbr\u003e\u003cstrong\u003eAbrasive Action:\u003c\/strong\u003e Fast-cutting, friable dacite\/igneous matrix that creates an active, creamy mud. It is ideal for breaking the glaze on hard finishing stones (Awasedo), kickstarting slurry on hard JNATs, or cleaning loaded surfaces without leaving coarse rogue scratches.\u003cbr\u003e\u003cstrong\u003eKasumi \/ Finish Profile:\u003c\/strong\u003e Leaves a clean, even, semi-matte contrast on San Mai or clad blades without gouging the softer cladding.\u003cbr\u003e\u003cstrong\u003ePhysical Condition:\u003c\/strong\u003e Lacquer sealed, Cleanly sawn rectangular cube with chamfered working edges, zero structural fissures, and crisp stamps intact.\u003cbr\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eDimensions: Approx.: \u003c\/strong\u003e35 mm × 25 mm × 27 mm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 50 g\u003cbr\u003e\u003cstrong\u003eColor \/ Texture:\u003c\/strong\u003e Light grey-buff base with the characteristic fine, speckled \"goma\" (sesame) patterning typical of authentic Aizu strata.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Dust Bowl Knives","offers":[{"title":"Default Title","offer_id":48027763114115,"sku":null,"price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/7320\/1283\/files\/56.png?v=1788015195"},{"product_id":"tajuma-toma-nagura","title":"Tajima Nakato Tomo Nagura \/ Slurry Stone","description":"\u003cp\u003e\u003cstrong\u003eClassification \u0026amp; Origin\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Tajima Nakato (但馬中砥) Tomo Nagura \/ Slurry Stone.\u003cbr\u003e\u003cstrong\u003eOrigin: \u003c\/strong\u003eTajima Province (modern Hyōgo Prefecture), Japan.\u003cbr\u003eStamps:\u003cbr\u003e\u003cstrong\u003eMain face:\u003c\/strong\u003e Rectangular boxed stamp reading 但馬中砥 (Tajima Nakato \/ Tajima Medium Stone).\u003cbr\u003e\u003cstrong\u003eSide face:\u003c\/strong\u003e Circular authentication\/grade stamp reading 響 (Hibiki).\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eGrade \u0026amp; Performance Profile\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eAbrasive Level:\u003c\/strong\u003e Medium grit range, functionally equivalent to approximately #1,200 – #3,000 grit.\u003cbr\u003e\u003cstrong\u003eHardness \u0026amp; Density:\u003c\/strong\u003e Medium-hard to hard matrix with moderate porosity and fast slurry breakdown.\u003cbr\u003e\u003cstrong\u003eBehavior:\u003c\/strong\u003e Cuts cleanly and quickly releases an abrasive, consistent mud that breaks down during use. It serves effectively as a prep nagura before progressing to fine JNAT finishing stages or for cleaning\/opening glazed surfaces on hard stones.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eVisual \u0026amp; Physical Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eDimensions \u0026amp; Weight Approximately:\u003c\/strong\u003e 26 mm × 28 mm × 28 mm, 56 g.\u003cbr\u003e\u003cstrong\u003eForm Factor:\u003c\/strong\u003e Precision-cut cube with flat, sawn reference faces and clean stamp impressions.\u003cbr\u003e\u003cstrong\u003eAesthetics: \u003c\/strong\u003eLight ash-grey base tone characterized by distinct, fine dark mineral speckling distributed evenly across the matrix.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Dust Bowl Knives","offers":[{"title":"Default Title","offer_id":48028148269187,"sku":null,"price":33.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/7320\/1283\/files\/62.png?v=1788018074"}],"url":"https:\/\/dustbowlknives.com\/collections\/tomo-nagura.oembed","provider":"Dust Bowl Knives","version":"1.0","type":"link"}