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Ohshima, T. (author), Igarashi, T. (author), Mitani, J. (author), Tanaka, H. (author)design a single free-form curved surface and to fabricate it based on the bending deformation characteristics of the material. The system also indicates an invalid shape; that is, one that will break upon bending deformation. The user can then design a valid shape with this information. We also develop an optimal Dukta pattern that is the...conference paper 2013