{"product_id":"shapton-glassstone-4000-type-wa-whetstone","title":"Shapton GlassStone 4000 Grit Ceramic Whetstone – 3 Micron Type WA","description":"\u003ch2\u003eShapton GlassStone 4000 Grit Ceramic Whetstone – 3 Micron Type WA\u003c\/h2\u003e\n\u003cp\u003eThe Shapton GlassStone 4000 is a fine finishing waterstone for smoothing the scratch pattern after medium-grit sharpening and creating a controlled, polished kitchen edge. Its 3-micron-class Type WA layer cuts cleanly without requiring a soak.\u003c\/p\u003e\n\u003cp\u003eThis is the full-size Shapton GlassStone GS\/HR model—not GlassStone Seven, RockStar, or the HC formulation. Type WA identifies Shapton’s white-alumina abrasive. A 5 mm sharpening layer is permanently laminated to 5 mm tempered glass for a precise, stable working surface.\u003c\/p\u003e\n\u003ch2\u003eWhy choose the 4000 grit\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFinishes edges after 1000- to 2000-grit sharpening\u003c\/li\u003e\n\u003cli\u003eRefines burrs and medium-stone scratch patterns\u003c\/li\u003e\n\u003cli\u003eCreates a smooth edge that remains practical for kitchen work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Shapton\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e GlassStone \/ GS Series HR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer SKU:\u003c\/strong\u003e 50103\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarcode:\u003c\/strong\u003e 4944509501032 (GTIN-13 \/ JAN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrit:\u003c\/strong\u003e 4000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParticle class:\u003c\/strong\u003e 3 micron class\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive type:\u003c\/strong\u003e Type WA (white alumina)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e 5 mm abrasive layer laminated to a 5 mm tempered-glass base\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 210 × 70 × 10 mm (8.27 × 2.76 × 0.39 in.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct weight:\u003c\/strong\u003e Approximately 360 g (12.7 oz.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater preparation:\u003c\/strong\u003e Splash-and-go; no soak required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e One GlassStone; holder sold separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of origin:\u003c\/strong\u003e Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to use\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSecure the stone on a non-slip stone holder with the abrasive face up.\u003c\/li\u003e\n\u003cli\u003eAdd clean water and begin sharpening. An optional 5–6 minute wetting can improve feel, but long soaking is unnecessary.\u003c\/li\u003e\n\u003cli\u003eMaintain a consistent angle and use controlled pressure, adding water as needed.\u003c\/li\u003e\n\u003cli\u003eFlatten periodically with a compatible lapping plate to preserve accuracy.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eCare\u003c\/h2\u003e\n\u003cp\u003eRinse after use and let the stone dry completely at room temperature before storage. Do not use detergent, hot water, direct sun, forced heat, or long-term soaking. Keep the sharpening face flat and free of embedded coarse grit.\u003c\/p\u003e\n\u003ch2\u003eBuild a Shapton progression\u003c\/h2\u003e\n\u003cp\u003eUse after the \u003ca href=\"\/es\/products\/shapton-glassstone-2000-type-wa-whetstone\"\u003eGlassStone 2000\u003c\/a\u003e. Finish here for a polished working edge, or continue to the \u003ca href=\"\/es\/products\/shapton-glassstone-8000-type-wa-whetstone\"\u003eGlassStone 8000\u003c\/a\u003e for a more highly polished finish. Browse the full \u003ca href=\"\/es\/collections\/shapton-whetstones\"\u003eShapton whetstone collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eCommon questions\u003c\/h2\u003e\n\u003ch3\u003eDoes a GlassStone need soaking?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed for splash-and-go use. A brief optional wetting can improve feel; avoid long soaking.\u003c\/p\u003e\n\u003ch3\u003eWhat does Type WA mean?\u003c\/h3\u003e\n\u003cp\u003eWA is Shapton’s designation for white alumina, the abrasive used in this model.\u003c\/p\u003e\n\u003ch3\u003eIs this a RockStar or GlassStone Seven?\u003c\/h3\u003e\n\u003cp\u003eNo. This is the full-size, 210 × 70 mm GlassStone with a 5 mm abrasive layer on a 5 mm tempered-glass base.\u003c\/p\u003e","brand":"Shapton","offers":[{"title":"Default Title","offer_id":54405791351008,"sku":"50103","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/6720\/0736\/files\/shapton-glassstone-4000-whetstone-top_fc089aef-724f-4501-a986-4e5ecabf8ffc.jpg?v=1787854691","url":"https:\/\/tokushuknife.com\/es\/products\/shapton-glassstone-4000-type-wa-whetstone","provider":"Tokushu Knife","version":"1.0","type":"link"}