From Lundstrom Design:
TouchCAD 3.0 is a combined 3D modeling and unfolding program focusing on the ability to generate complex 3D shapes and converting them into physically buildable models. The TouchCAD 3.0 modeling engine provides advanced free form 3D modeling based on 3D-math curves. The toolbox includes many basic shapes such as lines, polygons, curves, rectangles, double lines, points, cubes, surfaces, tubes, T-tubes, spheres, rectangle to circle extrusions, and tools for extrusion, lofting, path extrudes, sweep/revolve, etc. The TouchCAD 3.0 unfolding engine contains many parametric features such as individually adjustable overlap widths, double or single-sided overlaps, alignment/strike-up marks, object and vertex ID's, cutting and plotting coordinates, adjustable unfolding resolution and direction, adjustable merging points between sub-panels, direct export to DXF for use with most CAD-programs,VectorWorks (VectorScript), Adobe Illustrator (and compatible programs), etc. TouchCAD 3.0 can be used for a wide range of tasks such as marine design, production of soft material based objects such as tents, blimps, inflatable objects, reversed engineering where copies of existing objects are being recreated, sheet metal objects, industrial and architectural design, sculptures, etc.