{"product_id":"smooth-on-moldstar-15-slow-1-1-2-lb-kit","title":"Smooth-On Mold Star 15 SLOW","description":"\u003cdiv class=\"info\"\u003e\n\u003cdiv class=\"info\"\u003e\n\u003cp\u003e\u003cstrong\u003eMold Star™\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erubbers are easy to use platinum silicones which are mixed 1A:1B by volume (no weighing scale necessary).\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMold Star™\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003esilicones feature relatively low viscosities and vacuum degassing is not required for most applications. The pot life of\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eMold Star™ 15\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSLOW\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eis 50 minutes and cure time is 4 hours at room temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"features\"\u003e\n\u003ca name=\"features\"\u003e\u003c\/a\u003e\n\u003ch4\u003e\u003cspan style=\"text-decoration: underline;\"\u003eFeatures\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eMold Star™\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esilicones cure to soft, strong rubbers which are tear resistant and exhibit very low long term shrinkage. Molds made with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMold Star™\u003c\/strong\u003ewill last a long time in your mold library and are good for casting wax, gypsum, resins, and other materials. Cured\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMold Star™\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erubber is heat resistant up to 450°F (232°C) and is suitable for casting low-temperature melt metal alloys.\u003cspan\u003e \u003c\/span\u003e\u003cem\u003e\u003cstrong\u003eNote: Mold Star™ rubbers are not intended for brush-on moldmaking.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan style=\"text-decoration: underline;\"\u003eInstructions\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"warning\"\u003e\u003cem\u003e\u003cstrong\u003eNote: This product will not cure against surfaces containing sulfur, even when sealed.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eSafety\u003c\/strong\u003e\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003e- Use in a properly ventilated area (“room size” ventilation). Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk. Wear vinyl gloves only. Latex gloves will inhibit the cure of the rubber.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eStore and use material at room temperature (73°F\/23°C).\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWarmer temperatures will drastically reduce working time and cure time. Storing material at warmer temperatures will also reduce the usable shelf life of unused material. These products have a limited shelf life and should be used as soon as possible.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eCure Inhibition\u003c\/strong\u003e\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003e- Addition cured silicone rubber may be inhibited by certain contaminants in or on the pattern to be molded resulting in tackiness at the pattern interface or a total lack of cure throughout the mold. Latex, sulfur clays, certain wood surfaces, newly cast polyester, epoxy or urethane rubber may cause inhibition. If compatibility between the rubber and the surface is a concern, a small-scale test is recommended. Apply a small amount of rubber onto a non-critical area of the pattern. Inhibition has occurred if the rubber is gummy or uncured after the recommended cure time has passed. To prevent inhibition, one or more coatings of a clear acrylic lacquer applied to the model surface is usually effective. Allow any sealer to thoroughly dry before applying rubber.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEven with a sealer, Mold Star™ silicones will not cure against surfaces containing sulfur. If you are not sure if your clay contains sulfur, do a small compatibility test before using for an important project.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eApplying A Release Agent\u003c\/em\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Although not usually necessary, a release agent will make demolding easier when casting into most surfaces.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEase Release™ 200\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a proven release agent for releasing silicone from silicone or other surfaces. Mann Ease Release™ products are available from Smooth-On or your Smooth-On distributor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecause 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\u003cstrong\u003e\u003cem\u003eMeasuring \u0026amp; Mixing\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e- Before you begin, pre-mix Part A and Part B separately. After dispensing required amounts of Parts A and B into mixing container (1A:1B by volume),\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003emix thoroughly\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emaking sure that you\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003escrape\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ethe sides and bottom of the mixing container several times.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe rubber should be a uniform color with no streaks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional...\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eVacuum Degassing\u003c\/em\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Although not necessary, vacuum degassing helps eliminate any entrapped air in pourable silicone rubber. After mixing parts A and B, vacuum material for 2-3 minutes at 29 inches of mercury, making sure that you leave enough room in container for product expansion.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003ePouring\u003c\/strong\u003e\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003e- For best results, pour your mixture in a single spot at the lowest point of the containment field. Let the rubber seek its own level.\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eA uniform flow will help minimize entrapped air.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIf using as a mold material, the liquid rubber should level off at least 1\/2” (1.3 cm) over the highest point of the model surface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eCuring\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e- Allow\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMold Star™ 15 SLOW\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esilicone rubber to cure for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4 hours\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eat room temperature (73°F\/23°C) before demolding.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eHeat Curing\u003c\/strong\u003e\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003e- Time to demold can be reduced by applying mild heat.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eExample:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAfter pouring Mold Star™ 15 rubber at room temperature, place the mold in a hot box or industrial oven at 140°F (60°C). This will reduce the time to demold of a 1\/2” (1.3 cm) thick section to about 10 minutes.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTime will vary depending on mold thickness.\u003c\/p\u003e\n\u003cp\u003eAdding an appropriate amount of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePlat-Cat™\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecure accelerator will also reduce demold time. The pot life and cure times can be extended using\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSlo-Jo™\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecure retarder. Do not cure rubber where temperature is less than 65°F\/18°C.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMold Performance \u0026amp; Storage\u003c\/strong\u003e\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003e- The physical life of the mold depends on how you use it (materials cast, frequency, etc.). Casting abrasive materials can quickly erode mold detail, while casting non-abrasive materials (wax) will not affect mold detail. Before storing, the mold should be cleaned with a soap solution and wiped fully dry. Two part (or more) molds should be assembled. Molds should be stored on a level surface in a cool, dry environment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cp\u003eBrowse \u003ca href=\"\/fr\/collections\/smooth-on\"\u003eSmooth-On mould-making and casting materials\u003c\/a\u003e, or \u003ca href=\"\/fr\/pages\/contact\"\u003eask Go Industrial for product-selection and ordering help\u003c\/a\u003e.\u003c\/p\u003e","brand":"Smooth-On","offers":[{"title":"2 Pint","offer_id":53210628948268,"sku":"115981","price":49.99,"currency_code":"CAD","in_stock":true},{"title":"2 Gal","offer_id":53210628981036,"sku":"118842","price":355.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/3426\/4620\/files\/mold-star-15-slow.jpg?v=1778707025","url":"https:\/\/goindustrial.com\/fr\/products\/smooth-on-moldstar-15-slow-1-1-2-lb-kit","provider":"Go Industrial","version":"1.0","type":"link"}