It took a bit to understand what the rubys were. Now, I have a much better understanding. Thanks, John

Hi John and welcome. As you do woodwork, I registered you in our Woodworking forum so that you can access it when logged in. Also, a "beginner's tip" (as you come from Autocad) if you allow me: don't expect layers in SU to separate your geometry; they merely control visibility and the geometry on different layers is still interactive with each other. Use groups or components to separate geometry instead.