The boat has really been moving along since last winter and there is much to report here--I will try to get a bunch of posts together here quickly, so those of you who have been following along will have much to read and see....
I started out calling these side knees as defined on the plans and was subsequently informed that they are often referred to as the frames. But regardless of what you want to call them, they were really difficult to make and to install.
Our plans called for all of the frames with the exception of the two at the front of the boat to be parallel with the bottom planking and the transom. To do this each of the frames must be canted such that it is not perpendicular to the side planking. As a result there are lots of bevels to plane and cut.
|Trial and error fitting|
I started by making rough models of each frame prior to committing the angles to oak. But even so each frame went back and forth, back and forth, and back and forth many more times between the bench vise and the boat for custom fitting—hand planning the angle on the plank side, hand cutting out the notch for the chine, and chiseling out the curve for the quarter round. After much work and when I thought that I finally had each frame looking good I cut the final bottom angle on each frame in two directions, across the boat and front to back (a compound cut).
|Marking Gunwale position|
I did not however want to screw every plank to the each frame as this would mean that I would have to fill each of these holes and I was concerned about the holding strength of our thin planks once they were counterbored to hold a screw. So I settled on a plan to use ringed copper nails to attach the planks and made the arrangements to procure enough to secure each plank to each of the frames. However, I experienced nothing but grief with the installation of the first nail. I must not have drilled the hole deep enough (although I was at the extent of my drill bit) and as soon as the copper nail struck the oak without a pilot hole it promptly bent over. Extraction of a ringed nail is virtually impossible, so I cut it off close to the surface and went away wondering what to do now.
|Plugs already in place|