Let's Make Some Fiberglass! With the external layers of Chopped Strand Fiberglass Mat already added to build thickness, the strong, quadraxial layers of E-Glass are laid next. They have fibers running in four different directions which builds stiffness and rigidity into the hull. Strength layers added to Chopped Strand Mat Next, layers of Closed Cell Foam Core are added after being shaped. Kerf cutting is required with other types of foam to allow the foam to have a curved shape. Kerf cutting refers to adding multiple cuts with a saw blade that go about 2/3rds of the way through the material inline with the intended curvature to allow the foam to bend. The foam used by Vision Yachts does not require kerf cutting to bend it, so the gaps in the material that result from kerf cutting are not there. These gaps would results in extra vinyl ester resin that would add weight and cost without adding strength. The foam sheets do contain small holes throughout ...
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