>>> Oksana Chorna wrote: Really, it is not correct to use term "Tachi's origami" for this type of origami.
I was referring to Tachi's technique of folding (3D) closed polyhedral surfaces...and, there are other ways of folding closed polyhedral surfaces. Of course, all 3D models, closed or open surfaces, with straight creases can be flattened, without destructing their basic folding structures. Models with intrinsic curved crease, on the other hand, cannot be flattened without destructing their basic folding structures. I hope I have used the "correct" terms to convey my ideas. Cheng Chit
