It's Hip to be Square

We clamped the rouths onto the inwales and used a pencil to mark where we had to cut them out.

Then we used a mortising machine to cut out square holes so the kabes would fit through the holes.

Next, we used the jigsaw to cut the rouths.  This removes the wood between the two square holes, making it rectangular.

Now we are using the router to round over the edges of the rouths.

Finally, we glued the rouths into place and sanded them even with the side of the boat.