{"product_id":"smooth-cast-300q-series","title":"Smooth-Cast™ 300Q","description":"\u003cp\u003e\u003cstrong\u003eSmooth-Cast™ 300Q\u003c\/strong\u003e liquid plastic is a quick setting, ultra-low viscosity casting resin that yield castings that are \u003cstrong\u003ebright white and virtually bubble free\u003c\/strong\u003e. Vacuum degassing is not necessary. It offer the convenience of a 1A:1B by volume or 100A:90B by weight mix ratio. \u003c\/p\u003e\n\u003cp\u003eThis resin readily accept fillers (such as \u003cstrong\u003eURE-FIL™ 3\u003c\/strong\u003e from Smooth-On) and can be colored with \u003cstrong\u003eSO-Strong™\u003c\/strong\u003e or \u003cstrong\u003eIgnite™\u003c\/strong\u003e color tints (\u003cstrong\u003eSmooth-Cast™ 325\u003c\/strong\u003e series accepts pigments better than the \u003cstrong\u003eSmooth Cast™ 300\u003c\/strong\u003e series). Fully cured castings are tough, durable, machinable and paintable. It resists moisture and mild solvents. Applications for \u003cstrong\u003eSmooth-Cast™ 300Q\u003c\/strong\u003e Liquid Plastics include reproducing small to medium size sculptures, casting into alginate molds, making prototype models, special effect props and decorative jewelry. \u003c\/p\u003e\n\u003cp\u003eThose interested in making roto cast pieces should refer to the \u003cstrong\u003eSmooth-Cast™ 65D\u003c\/strong\u003e technical bulletin.\u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e30 Second Pot Life\u003c\/strong\u003e - can be poured in alginate molds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy to measure and mix\u003c\/strong\u003e - 1:1 mix ratio by volume - no scale required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow viscosity\u003c\/strong\u003e - captures excellent detail\u003c\/li\u003e\n\u003cli\u003eResin cures to a \u003cstrong\u003ebright white\u003c\/strong\u003e finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shoplightspeed.com\/shops\/606431\/files\/56917713\/smoothcast300q300305310specs.png\" alt=\"\" width=\"937\" height=\"467\"\u003e\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eSafety\u003c\/strong\u003e\u003c\/em\u003e - Materials should be stored and used in a warm environment (73° F \/ 23° C). These products have a limited shelf life and should be used as soon as possible. All liquid urethanes are \u003cstrong\u003emoisture sensitive and will absorb atmospheric moisture\u003c\/strong\u003e. Mixing tools and containers should be clean and made of metal, glass or plastic. Mixing should be done in a well-ventilated area. Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk.\u003cstrong\u003e Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eApplying A Release Agent \u003c\/strong\u003e\u003c\/em\u003e- A release agent is necessary to facilitate demolding when casting into or over most surfaces. Use a release agent made specifically for mold making (\u003cstrong\u003eUniversal™ Mold Release \u003c\/strong\u003eor Mann’s \u003cstrong\u003eEase Release™ 200\u003c\/strong\u003e available from Smooth-On or your Smooth-On distributor). A liberal coat of release agent should be applied onto all surfaces that will contact the plastic.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eIMPORTANT:\u003c\/strong\u003e\u003c\/em\u003e To ensure thorough coverage, apply release and brush with a soft brush over all surfaces. Follow with a light mist coating and let the release agent dry for 30 minutes. Smooth-On silicone rubber molds usually do not require a release agent unless casting silicone into the mold. Applying a release agent will prolong the life of the mold.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMEASURING \u0026amp; MIXING\u003c\/strong\u003e... Liquid urethanes are\u003cstrong\u003e moisture sensitive and will absorb atmospheric moisture.\u003c\/strong\u003e Mixing tools and containers should be clean and made of metal, glass or plastic. Materials should be stored and used in a warm environment (73°F\/23°C).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStir or shake both Part A \u0026amp; Part B thoroughly before dispensing\u003c\/strong\u003e. After dispensing equal amounts of Parts A and B into mixing container (100A:90B by weight) and mix \u003cstrong\u003ethoroughly\u003c\/strong\u003e. Stir deliberately making sure that you scrape the sides and bottom of the mixing container several times. Be careful not to splash low viscosity material out of the container.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePOURING, CURING \u0026amp; PERFORMANCE\u003c\/strong\u003e...\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003ePouring\u003c\/strong\u003e\u003c\/em\u003e - Pour your mixture in a single spot at the lowest point of the containment field and let the mixture seek its level. This will help minimize air entrapment.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eFor Best Results \u003c\/strong\u003e\u003c\/em\u003e- Best results are obtained using a pressure casting technique. After pouring the mixed compound, the entire casting assembly (mold, dam structure, etc.) is placed in a pressure chamber and subjected to 60 PSI (4.2 kg\/cm2) air pressure for the full cure time of the material.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eCuring - Warning:\u003c\/strong\u003e\u003c\/em\u003e Fumes, which may be visible as this product starts to “gel” and cure, will dissipate with adequate ventilation. Only use this product with room size ventilation and do not inhale\/breathe fumes. Castings will be extremely hot immediately following cure and may burn the skin. Let cool to room temperature before handling. \u003cstrong\u003eSmooth-Cast™ 300\u003c\/strong\u003e will cure in 7 - 10 minutes (\u003cstrong\u003eSmooth-Cast™ 305\u003c\/strong\u003e in 30 – 40 minutes and \u003cstrong\u003eSmooth-Cast™ 310 \u003c\/strong\u003ein 2 - 4 hours) depending on mass and mold configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003ePost Cure\u003c\/strong\u003e\u003c\/em\u003e - Castings will reach “full cure” faster and achieve maximum physical properties if post cured. Allow material to cure for recommended Cure Time at room temperature followed by 4 - 6 hours at 150°F\/65°C. Allow casting to come to room temperature before handling.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003ePerformance\u003c\/strong\u003e\u003c\/em\u003e - Cured castings are rigid and durable. They resist moisture, moderate heat, solvents, dilute acids and can be machined, primed\/ painted or bonded to other surfaces (any release agent must be removed). If machining cured material, wear dust mask or other apparatus to prevent inhalation of residual particles. Castings can be displayed outdoors after priming and painting. Unpainted castings will yellow over time - more quickly when exposed to ultra-violet light.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.smooth-on.com\/msds\/files\/SC_300_300Q_320_380_45D_60D_61D_65D_66D_ONYX.pdf\" rel=\"noopener\" target=\"_blank\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"Smooth-On","offers":[{"title":"Trial Kit (1.9 lbs. \/ 0.86 kg.)","offer_id":48015533080891,"sku":"49644","price":25.99,"currency_code":"USD","in_stock":true},{"title":"2 Gallon Kit (15.4 lbs. \/ 6.99 kg.)","offer_id":48015533048123,"sku":"49661","price":128.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/Smooth-Cast-300Q-combo-1400x1050.jpg?v=1754775619","url":"https:\/\/maacaffestore.com\/products\/smooth-cast-300q-series","provider":"The Compleat Sculptor, Inc","version":"1.0","type":"link"}