RAN Sailing · video

What this video covers

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

More from RAN Sailing

Making Our Sailboat One Solid Structure - Ep. 498 Ran SailingAug 2026From Laser Precision to Endless Sanding - Ep. 497 Ran SailingJul 2026Is This The Detail The Boat Has Been Waiting For? - Ep. 496 Ran SailingJul 2026The Hardest Part Of Building A Boat - Ep. 495 Ran SailingJul 2026

From RAN Sailing — see the channel’s boat, crew, and every analyzed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.