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Shaping the foils: a machine is born

The solution came from marrying an idea I saw on a website with my SSRK, a router guide which slides on a track made by EurekaZone. The advantage of having the router slide on a track, mean that the router could be clamped as it traversed the width of the workpiece. The router and track could then be mounted on a platform riding on bushings atop angle iron which straddled the workpiece. A slot in the platform allowed the router to drop through and take off progressive shavings of the mahogany blank, shaping the rudder and leeboard.

Check the vid!



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Leeboard and rudder

The blanks for the leeboard and rudder were made from mahogany boards which were ripped, then laminated back together with grains reversed so as to avoid warping. This clamping job was a doozy, because it was done under plastic which helped in keeping the glue up clean, but facilitated slippage.

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I then planed and sanded the blanks so that they were ready for shaping. I downloaded images of the NACA sections for the foils , but wondered how the heck I was going to carve the foils into those precise shapes. I got on the internet, and started searching for ideas...
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Bulkheads and storage compartments

It’s been awhile since my last update, but fortunately I can report significant progress.

After the bottom stringers were planed flat, Hoa helped me flip the floor over and position it on the plywood sides. I then nailed it in place, and trimmed the edges so that the canoe has a bottom. Only a couple of nails went astray. Bulkheads were then nailed and epoxied into place, greatly stiffening the structure, especially after fillets were spread from the plywood faces of the bulkheads to the sides. This divided the hull into storage compartments.
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Inside will go food, water, clothes, sleeping bags and mattresses, anchors, ropes, and all the sundry gear which makes an expedition survivable and enjoyable. I painted the compartments with an epoxy enamel paint, which should hopefully be durable!IMG_1663

Note the extra bulkhead after station #2, with the oval access holes. This bulkhead is affixed to a plywood box which sits underneath the mast and transfers all the compressive forces to the rest of the hull. This section of the boat is very stiff and strong.

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