I was told in M&M class that this is a feature in Rhino. I am betting TC has it, but I can't find it. It goes something like this: Create several primitive 3D entities, place them so that they intersect, Boolean add them together, explode. I am with them so far, but the last software command, "unroll developable surface" is one I cannot get to in TC ... if it exists. This developable surface is flat and one I can cut on the laser cutter, using colored acetate, and then form build the physical model. Anyone have any idea how I might do this in TC?