Calendar Islands Yawl Modeling Continued

Fleshing out the Calendar Islands Yawl

Modeling the Interior

While I am actually breaking out the geometry of the final 3D computer model, the interior of the "in-the-flesh" model was glued in yesterday and Ill prime it today.

Cutting out quarter scale bulkheads for Calendar Islands Yawl interior.

It never ceases to amaze me how everything just fits. Paper patterns are Spray77 tacked to 1/8" plywood and cut to the line on the bandsaw. Then the parts are glued into place with little to no refinement and they fit well. It makes this method of proving out the hull design quite efficient.

After hull turnover in actual full-size construction, this is what the boat interior will look like.

The beauty of kit construction, is that we set up stem, bulkheads, and transom on a CNC cut, self-jigging strongback. And after planking, we turn over the hull and the interior structure is already complete. In traditional construction, the molds would be removed and bulkheads fit in their place. Kit construction allows the professional and home-builder to skip the time consuming steps of making patterns and scribing in bulkheads.

After turn over, the tank tops are put in place. They play an important structural role in stiffening this very light boat.

Stay up to date with me as next Ill prime the hull and make paint choices. Furthermore, the cutting files will be ready for CNC cutting of the first kit. 

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Modeling in the Flesh and Screen

 Modeling the hull

After slicing and dicing the hull "shell" in the computer, I had the parts cut and assembled them into a quarter scale model. Modeling is a great way to test the plank shapes and make sure the lines look good in 3D reality. 

The CNC cut parts delivered by CNC Routing & Design in Camden, Maine.

The molds set up and plank-keel attached. The molds are stand ins for the permanent bulkheads that will be set up in the actual boat. The molds are set up using hot glue.

Planking up the model over the molds. The planks (1/8" thick ply) fit well and the lines came out as fair as I could have hoped.

The CIY model with outer stem and gunwales attached. I slightly tweaked the sheer.

Aft view showing a very pretty transom. I also made slight tweaks to the width of the strake below the sheer, but most people would never notice. Not me; I see a line thats a 64th of an inch off!

Once I was assured that the hull aesthetics and plank fits were "right", I proceeded to finish modeling the interior of the hull and, finally, designing the strongback system, no small task. Ill report on this next post and hopefully show some paint on the model, too!

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