RAN Sailing · video

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Johan and Malin laminate the keel recess of their boat using a vacuum bagging process to ensure structural integrity and eliminate air voids. The setup includes a vacuum pump connected via a long hose to a catch pot and a bag assembly consisting of peel ply, breather cloth, and a perforated plastic sheet.0:51 To manage the exothermic reaction and prevent premature curing, they use a slow hardener and maintain temperatures between 16 and 20 degrees Celsius.12:17 The process involves saturating fiberglass layers with epoxy, using mohair and aluminum rollers to remove bubbles, and sealing the assembly with butyl sealant tape.6:36 The team learned to pour epoxy onto the work surface immediately rather than leaving it in trays to extend their working time.10:09 They also discovered that nylon peel ply conforms better to tight corners than polyester alternatives.18:11 The vacuum system successfully maintains over 20 inches of mercury, effectively compacting the laminate into the recess corners.11:39

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