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Cylindrical sheet forming: a) mandrel; b) mandrel with attached film; c) free standing shaped film, external surface; d) free standing shaped film, internal surface; e) free standing shaped film, cross section. Sheet forming over an M5×0.8 bolt template: f) mandrel; g) mandrel with attached film; h) free standing shaped film, internal surface; i) optical 10x zoom of internal surface.
