This "post-cure heating" discussion may be at apples and oranges. Most resins need a certain minimum temp for curing in a reasonable time. Heating these post-layup only speeds the ordinary curing process. However, some are formulated to require a "post-cure" cooking at an elevated temperature to establish cross-linking. These are special materials. I do not believe ordinary polyester or vinylester resins benefit from post curing at elevated temperatures; neither do most epoxy formulations. Here is one epoxy formulation which does; note it is completely different from the other formulations this manufacturer sells: http://www.systemthree.com/p_phase_two.asp It has a very long pot life, making it unsuitable for ordinary uses, but ideal for vacuum layup in molds. And, it does not work well with wood, unlike most epoxies. -- Dave Kruger Astoria, OR *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Sun Apr 08 2007 - 08:23:48 PDT
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