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Old 10-24-2016, 10:36 AM
Join Date: Jan 2011
Location: Capron, IL
Posts: 7,834
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The West Systems when mixed with Colloidal and graphite made pretty hard molds, the parts were softer when they came out, but firmed up over time. When it comes to cowls I tend to like them to be flexible so they dont crack like the ones that come with ARF. I have 3 molds I made and they are all hard as rocks. IF there is a less expensive Epoxy that is just as good or better I'm all for it, but the West Systems is easy to obtain for me. I made a mold once using automotive resin. Man was that a mistake, it melted the plug and stunk up the house.
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