After thinking about this for several days and partial nights, I realized that adding fancy joints to the perimeter wall would add a lot of interest. The problem is that the joints will have to be at an odd angle, that angle dependent on the number of sides. I decided not at all arbitrarily to make 11 sides. I’ll leave the reason “as an exercise for the student”. In any case, I laid out a design for a machining fixture in VCarve and made it out of 18mm Baltic Birch. Now I just need clamps to hold down the work piece. Oh, and to design the joint file. Unfortunately Tailmaker’s software will do 90 degree or flat joints, not odd angled ones. Hence the fixture and a custom design.