Have you ever tried joining all the triangles in the Mesh after exploding them, then cutting them with the Plane (Rectangee). You could form a surface from the point network on the cut triangles end points. As far as thickness goes, Since I worked with the unrolled parts, and you never know what thickness the person is going to use, this is something that ultimately will either have to be stated as in "Use this thickness paper", or , as any modelers understands, you will have to fit the formers. Since it benefits the former to have a strip glued to it, is becomes easier to build one up than cut one down. I have not found this to be much of an issue of any of the models I built, that I designed. Yes, I built them, I just have never made instructions for them. The ESKA, A90 Orlyonk, and the Nausicaa Gunship came out fine, without having to do much of anything iwth the formers, except stick them in their, with glue on them, of course. Allen, if you duplicate the Edge of that part, under Transformation, you can make in larger in all 3 directions with one command, or enter the amount. If eyeballing, make a small square to represent the size you want offset, and snap to the corner of that square (which is up against the part), and you now have your former.