This will be my second open segment project and may seem a bit overzealous but I am going to give it a try. My Jig is all set, the plan is in place (short of printing the Rings) and I have no lumber milled yet. I am thinking I will try the first few rows to see how it goes. My last project was a 60 segment per ring so I want to take a small step and go for 72. The first row S.E.L. is 0.125" and is maple and wenge. I'm thinking the wenge will be the wild card cutting that small. This is the design that I came up with. It's about 9.5" wide and 5.5" Tall, 1945 pieces. Any words of wisdom, do's or don't, suggestions or advise that you have would be greatly appreciated.