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Step 4P01 grows up
Hull is assembled upside down. The plywood deck board is on the table and the first batt of foam glued to it along marked centerline. Foam batt thickness matches the drawing dimension.
I first scaled up the drawing onto pieces of MDF (medium density fiberboard), cut out the pieces and sanded their edges smooth. I used those as templates to mark the plywood parts, which I rough-cut out using saber saw, then used the MDF templates and pattern-following router and bit to trim the parts. Since P01 was symmetrical end-to-end and side-to-side, a template of only one quarter or one half of each wood piece was needed. The templates also ensure that molds for multiple hulls of the same design will be identical. I sanded the wood edges and painted them with epoxy to keep the hotwire cutter from catching a snag during the eventual carving.
I first scaled up the drawing onto pieces of MDF (medium density fiberboard), cut out the pieces and sanded their edges smooth. I used those as templates to mark the plywood parts, which I rough-cut out using saber saw, then used the MDF templates and pattern-following router and bit to trim the parts. Since P01 was symmetrical end-to-end and side-to-side, a template of only one quarter or one half of each wood piece was needed. The templates also ensure that molds for multiple hulls of the same design will be identical. I sanded the wood edges and painted them with epoxy to keep the hotwire cutter from catching a snag during the eventual carving.
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