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Scanning Our 50ft Hull For The Keel Grid - Ep. 411 RAN Sailing

September 27, 2024 · 21 min · 139K views · Skåne

What this video covers

Johan and Malin are constructing a 50-foot sailboat in a barn in Sweden, currently focusing on the installation of the internal keel grid.0:11 After laminating the keel area, Johan verified the laminate thickness by drilling a 3-millimeter pilot hole at the centerline, confirming a thickness of approximately 25 to 26 millimeters.5:31 To ensure an accurate fit for the structural floor beams against the irregular, hand-laminated hull, Johan utilized a 2D laser scanner to capture precise cross-sectional measurements.7:10 He imported these scans into a computer to generate templates for a handheld CNC router.7:57 The team opted to build the keel grid from mahogany rather than a traditional foam-core sandwich, planning to bond the wood structure to the hull using thickened epoxy and fiberglass.9:23 Johan tested the workflow by cutting a prototype beam from plywood before committing to the mahogany stock.13:08 The grid design includes ten transverse beams and two longitudinal stringers, with plans to incorporate limber holes for drainage and cable routing.19:53

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