Well I am preparing to do the final bagging and resin infusion of my primary plenum section. It had been molded in a fiberglass mold with a custom bladder inside. In the Process the bladder folded slightly inside the mold and created some voids. So I have used another two layers of carbon to cover the part. I filled the inside with 6 lb foam to hold the shape against the pressure of the vacuum bagging. The foam takes place of the bladder which broke up during the process. I will try to remember to takes pics, which I didn't do on the last molding.
Acetone will melt the foam completely when epoxy sets up, it doesn't touch the epoxy.
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