{"product_id":"wood-stone-akabond-621-kg-part-b-hardener-for-clear-knife-grade-stone-epoxy-1-quart","title":"Wood \u0026 Stone Akabond 621 KG Part B — Hardener for Clear Knife-Grade Stone Epoxy (1 Quart)","description":"\u003ch2 style=\"color:#231F20; font-size:28px; margin-bottom:18px;\"\u003eWood \u0026amp; Stone Akabond 621 KG Part B — Hardener for Clear Knife-Grade Stone Epoxy (1 Quart)\u003c\/h2\u003e\n\n\u003cp style=\"color:#231F20; font-size:15px; line-height:1.7;\"\u003eAkabond 621 KG Part B is the hardener component of Wood \u0026amp; Stone's two-part clear knife-grade stone epoxy. Blended with Akabond 621 KG Part A resin (F015521) at a 2:1 ratio by volume, it triggers a solvent-free, zero-shrinkage cure that yields a strong, color-stable bond on light-colored marble, quartzite, and granite. Sized to match a 1\/2-gallon unit of Part A.\u003c\/p\u003e\n\n\u003cstyle\u003e\n.dst-accordion { margin-top: 25px; border: 1px solid #FDDCC5; border-radius: 6px; overflow: hidden; }\n.dst-accordion-item { border-bottom: 1px solid #FDDCC5; }\n.dst-accordion-item:last-child { border-bottom: none; }\n.dst-accordion-toggle { display: none; }\n.dst-accordion-label {\n  display: flex; justify-content: space-between; align-items: center;\n  padding: 14px 20px; cursor: pointer; font-size: 17px; font-weight: 700;\n  color: #231F20; background: #fff; transition: background 0.2s;\n}\n.dst-accordion-label:hover { background: #FFF3EB; }\n.dst-accordion-label::after {\n  content: '+'; font-size: 22px; font-weight: 700; color: #F15C22;\n  transition: transform 0.3s;\n}\n.dst-accordion-toggle:checked + .dst-accordion-label { background: #FFF3EB; }\n.dst-accordion-toggle:checked + .dst-accordion-label::after { content: '\\2212'; }\n.dst-accordion-content {\n  max-height: 0; overflow: hidden; transition: max-height 0.4s ease;\n  padding: 0 20px; background: #fff;\n}\n.dst-accordion-toggle:checked ~ .dst-accordion-content {\n  max-height: 5000px; padding: 15px 20px 20px;\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"dst-accordion\"\u003e\n  \u003cdiv class=\"dst-accordion-item\"\u003e\n    \u003cinput type=\"checkbox\" id=\"acc-wood-stone-akabond-621-kg-part-b-hardener-for-cl-specs\" class=\"dst-accordion-toggle\"\u003e\n    \u003clabel for=\"acc-wood-stone-akabond-621-kg-part-b-hardener-for-cl-specs\" class=\"dst-accordion-label\"\u003eSpecifications\u003c\/label\u003e\n    \u003cdiv class=\"dst-accordion-content\"\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%; border-color:#FDDCC5; font-size:14px;\"\u003e\n\u003ctr style=\"background-color:#F15C22; color:#fff;\"\u003e\n\u003cth style=\"padding:8px 12px; text-align:left;\"\u003eProperty\u003c\/th\u003e\n\u003cth style=\"padding:8px 12px; text-align:left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eBrand \/ Line\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003eWood \u0026amp; Stone Akabond (Axson North America)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eProduct\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003e621 KG — Knife Grade, Part B (Hardener)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eArticle Number\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003eF015531\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eComponent\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003ePart B hardener — use with Part A resin (F015521)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eChemistry\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003eTwo-part epoxy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eSystem Consistency\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003eKnife grade — high-viscosity clear gel, sag-resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eColor\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003eTranslucent \/ clear (very good color stability)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eMix Ratio\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003e2:1 by volume (Part A : Part B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003ePot Life\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003e20–30 minutes at 78°F (150 g mix)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eCure Time\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003e12–16 hr at 78°F (25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eMin. Application Temp\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003e40°F (4°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eShrinkage\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003eZero (0%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eFormulation\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003eSolvent-free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#FFF3EB;\"\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003e1 quart (Part B) — matches a 1\/2-gallon Part A unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; font-weight:bold; text-align:left; width:40%;\"\u003eUse\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; text-align:left;\"\u003eInterior \u0026amp; exterior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"dst-accordion-item\"\u003e\n    \u003cinput type=\"checkbox\" id=\"acc-wood-stone-akabond-621-kg-part-b-hardener-for-cl-features\" class=\"dst-accordion-toggle\"\u003e\n    \u003clabel for=\"acc-wood-stone-akabond-621-kg-part-b-hardener-for-cl-features\" class=\"dst-accordion-label\"\u003eFeatures \u0026amp; Benefits\u003c\/label\u003e\n    \u003cdiv class=\"dst-accordion-content\"\u003e\n\u003cul style=\"color:#231F20; font-size:14px; line-height:1.8; padding-left:20px;\"\u003e\n\u003cli\u003eHardener metered for a 2:1 by-volume blend with Akabond 621 KG Part A.\u003c\/li\u003e\n\u003cli\u003eTriggers a solvent-free, zero-shrinkage cure for tight seams and fills.\u003c\/li\u003e\n\u003cli\u003eColor-stable chemistry keeps seams clear on light marble, quartzite, and granite.\u003c\/li\u003e\n\u003cli\u003e20–30 minute pot life at room temperature.\u003c\/li\u003e\n\u003cli\u003eInterior and exterior rated with very good color stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"dst-accordion-item\"\u003e\n    \u003cinput type=\"checkbox\" id=\"acc-wood-stone-akabond-621-kg-part-b-hardener-for-cl-apps\" class=\"dst-accordion-toggle\"\u003e\n    \u003clabel for=\"acc-wood-stone-akabond-621-kg-part-b-hardener-for-cl-apps\" class=\"dst-accordion-label\"\u003eApplications\u003c\/label\u003e\n    \u003cdiv class=\"dst-accordion-content\"\u003e\n\u003cp style=\"color:#231F20; font-size:14px; line-height:1.7;\"\u003eCombine with Akabond 621 KG Part A resin (F015521) at 2:1 by volume to bond and laminate slabs, seam countertops, and fill chips or cracks in light-colored natural stone. Keep containers matched so Part B is used at the correct 2:1 ratio.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top:24px; padding:14px 18px; background:#FFF8F3; border-left:4px solid #F15C22; color:#231F20; font-size:14px;\"\u003e\u003cem\u003eWear appropriate PPE. Follow manufacturer instructions and safety regulations.\u003c\/em\u003e\u003c\/p\u003e","brand":"Tenax","offers":[{"title":"Default Title","offer_id":45934905000006,"sku":"F015531","price":80.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0621\/0800\/8518\/files\/hero_77e91a99-2283-4950-bd8f-bbf176c2c9c2.jpg?v=1785093131","url":"https:\/\/dynamicstonetools.com\/products\/wood-stone-akabond-621-kg-part-b-hardener-for-clear-knife-grade-stone-epoxy-1-quart","provider":"Dynamic Stone Tools","version":"1.0","type":"link"}