[1] Powell NN. Incremental of sheet metal forming: flanged components, Proc. of the 28th MATADOR Conference, UMIST, April 1990, 359-365. [2] Powell N N and Andrew C. Incremental forming of flanged sheet metal components without dedicated dies. Proc. of the Inst. of Mech. Engineers, Journal of Engineering manufacture, 1992, 206, 41-47. [3] Matsubara S A computer numerically controlled dieless incremental forming of a sheet metal. In: Proc. of the Inst. of Mech. Engineers, part B, J Eng Manuf, 215, 7, 2001, 959–966. [4] Jie L, Jianhua M and Shuhuai H. Sheet metal dieless forming and its tool path generation based on STL files. Int J Adv Manuf Technol, 2004, 23, 696–699. [5] Dai K, Wang ZR and Fang Y.CNC incremental sheet forming of an axially symmetric specimen and the locus of optimization, Journal of Materials Processing Technology 151, 2004, 63–69. [6] Yang H, Zhan M, Liu YL, Xian FJ, Sun ZC, Lin Y, and Zhang XG, Some advanced plastic processing technologies and their numerical simulation, J. Materials Processing Tech., 151, 1-3, 2004, 63-69. [7] Kim T. J. and Yang D. Y. Improvement of formability for the incremental sheet metal forming process. Int. J. Mech. Sci., 2001, 42, 1271-1286. [8] Yoon SJ, Yang DY Investigation into a new incremental forming process using an adjustable punch set for the manufacture of a doubly curved sheet metal, Proc. Inst. of Mech. Engineers, part B, J Eng Manuf 215, 7, 2001, 991–1004. [9] Filice L. Fratini L and Micari F. Analysis of material formability in incremental forming, Annals of the CIRP, 51, 1, 2002, 199-202. [10] Fratini L, Ambrogio G, Di Lorenzo R, Filice L and Micari F. Influence of Mechanical Properties of the sheet Material on formability in single point incremental forming. Annals of the CIRP, 53, 1, 2004, 207-209. [11] Hirt G, Ames J, Bambach M and Kopp R. Forming strategies and Process modelling for CNC Incremental sheet forming. Annals of the CIRP, 53, 1, 2004, 203-206.