Hex Twist Star (CFW 105)

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This star would have been simple to fold were it not for the final folds that create the small hexagon in the center. These folds on each side should be perfectly symmetric and at the same time they lock each another in place: the folded state can’t really be achieved without the paper intersecting itself. In practice you can get close due to the paper not being perfectly rigid, but it’s much harder to fold neatly than one could expect from such a simple arrangement of layers.

This model appears under the name “No 22” in the section with stars in Twist Origami I and as “16” in the corresponding section of Invitation to Creative Playing with Origami.