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Polyester resin infusion can be an easy process, yet there are still several tricks involved. While less complex than epoxy, planning ahead for polyester resin infusion is still vitally important if it's to go smoothly. Similar to open molding, there is much to keep in mind such as mold release systems, skin coats, in-mold coatings (if applicable), resin systems and infusion materials. Infusion generally involves placing dry stacks of reinforcements and core materials into a vacuum bag, extracting excess air through pumping out and wetting out, then pouring a res
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