Q
how long does it take for polyester resin to cure
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The curing time of polyester resin is influenced by multiple factors such as ambient temperature, the specific formula of the resin, and the catalyst (hardener) ratio used. Generally, polyester resin starts to cure within 15 to 20 minutes at room temperature (about 77°F or 25°C) and can be fully cured in 24 to 48 hours. Cooler temperatures can slow the curing process, requiring up to 72 hours or more for a full cure, while higher temperatures can accelerate it. For optimal results, always follow the manufacturer's recommendations on the catalyst ratio and consider the working environment. Adding too much catalyst can cause the resin to cure too quickly, potentially leading to cracking or brittleness, while too little can result in an incomplete cure.
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