{"product_id":"599954-durcisseur-sikkens-optima-hardener-sanding-1l","title":"599954 - Hardener SIKKENS Optima hardener sanding 1L","description":"\u003cp\u003eThe hardener \u003cstrong\u003eAutosurfacer Optima Hardener Sanding\u003c\/strong\u003e is specially designed for the sandable version of the primer \u003cem\u003eAutosurfacer Optima\u003c\/em\u003e. It allows for quick drying, easy sanding, and high productivity — ideal for modern repair cycles. :contentReference[oaicite:1]{index=1}\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Autosurfacer Optima Hardener Sanding (Sikkens)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 2-K polyisocyanate hardener for “Sanding” version\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Exclusively with \u003cem\u003eAutosurfacer Optima Sanding\u003c\/em\u003e + “Reducer Sanding” (Fast\/Medium\/Slow) :contentReference[oaicite:2]{index=2}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMixing Ratio (vol.):\u003c\/strong\u003e 3 Optima : 1 Hardener Sanding : 1 Reducer Sanding (Fast\/Medium\/Slow) :contentReference[oaicite:3]{index=3}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePot-life:\u003c\/strong\u003e Approx. 30 min at 20°C (Fast\/Medium) · up to 30 min at 30°C (Slow) :contentReference[oaicite:4]{index=4}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrying Time at 20°C:\u003c\/strong\u003e Sandable in ≈ 30–60 min depending on thickness\/thinner :contentReference[oaicite:5]{index=5}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForced Drying:\u003c\/strong\u003e 60°C ≈10 min · IR ≈5 min (max element temp 100°C) :contentReference[oaicite:6]{index=6}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 1 thin closed coat + 1–2 full coats without intermediate evaporation :contentReference[oaicite:7]{index=7}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGun Settings (sandable version):\u003c\/strong\u003e nozzle 1.6‑1.8 mm · 1.7‑2.0 bar · HVLP 0.6‑0.7 bar (8‑10 psi) :contentReference[oaicite:8]{index=8}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Approximately 12 months at ~20°C in closed packaging :contentReference[oaicite:9]{index=9}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Finishes:\u003c\/strong\u003e Can be overcoated with all Sikkens clears\/finishes (e.g., Autowave, Autocryl, etc.) :contentReference[oaicite:10]{index=10}\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProduct Benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick Drying:\u003c\/strong\u003e significantly reduces downtime before sanding or finishing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Application:\u003c\/strong\u003e choice of thinners (Fast, Medium, Slow) suited to temperature and size of the repaired element\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface Quality:\u003c\/strong\u003e ensures good adhesion and a homogeneous surface, ready for sanding before finishing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReliability:\u003c\/strong\u003e stable and reproducible process, compliant with manufacturer specifications and Sikkens system :contentReference[oaicite:11]{index=11}\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePreparation of body elements after sanding (spot repair, full panels)\u003c\/li\u003e\n  \u003cli\u003eSubstrates: bare steel, aluminum, OEM e-coat, polyester fillers, treated plastic parts :contentReference[oaicite:12]{index=12}\u003c\/li\u003e\n  \u003cli\u003eUse in body shops seeking productivity, quality, and short cycle times\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eUsage \u0026amp; Preparation Tips\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface Preparation:\u003c\/strong\u003e Degrease, final sanding P320–P500 (P600 recommended for dark colors) :contentReference[oaicite:13]{index=13}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMixing:\u003c\/strong\u003e Follow the 3:1:1 ratio; add the hardener first, mix well, then incorporate the thinner. :contentReference[oaicite:14]{index=14}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Apply one thin closed coat then 1 to 2 full coats without intermediate flash-off. :contentReference[oaicite:15]{index=15}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSanding:\u003c\/strong\u003e Block sand P400 (exception) then machine P500–P600 depending on dark color or not. :contentReference[oaicite:16]{index=16}\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSafety \u0026amp; Storage\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRequired PPE:\u003c\/strong\u003e Protective gloves, goggles, and air-fed respirator strongly recommended — professional use only. :contentReference[oaicite:17]{index=17}\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Keep at ~20°C, closed packaging, avoid significant temperature fluctuations. :contentReference[oaicite:18]{index=18}\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"note\"\u003eAbout\u003c\/h2\u003e\n\u003cp\u003eThe Autosurfacer Optima Sanding hardener is a key component of the Sikkens system designed to meet the needs of modern workshops: combining speed, quality, and durability in repairs. It integrates perfectly into a “short cycle” process and allows for optimizing efficiency without compromising the finish. :contentReference[oaicite:19]{index=19}\u003c\/p\u003e","brand":"SIKKENS","offers":[{"title":"1 liter","offer_id":51954043879767,"sku":"599954","price":65.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/0441\/0967\/files\/39579b2b84ac87365499cd837f6a.png?v=1761200796","url":"https:\/\/color-box.eu\/en-be\/products\/599954-durcisseur-sikkens-optima-hardener-sanding-1l","provider":"ColorBox","version":"1.0","type":"link"}