Yesterday started out with drawing up another station from the table of offsets to check the shaping toward the ends. I’m not planning on laminating another frame here, this was just to check the lines and also to inform my choices for beveling the stringers towards the ends of the boat. On the worksheet, I’m converting the offsets to decimals and then multiplying by 1.05 for the 5% scale of this boat and then converting back to fractions. a little block with a notch in it is very useful for setting the nails straight.
I also recorded the bevel angles for the frames toward the ends, so the stringers will lay flush, and made final choices on the stringer placement and the sheer line. This is where the real voodoo of skin on frame building comes in, because there are always forces working to hog the keel and to resist that I flex the laminated sheer strakes downward a little bit and then hopefully everything balances out. It’s not an exact science and usually takes several boats of trial and error to get it perfect for any particular design.
Finally, I worked on finding the exact angle to cut the ends of the gunwales so they lay flush with the stem. This is a little bit nerve-racking, but hopefully I got it right. Today we take everything apart again to bevel the frames and the stringers.
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