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  2. Kawasaki's theorem - Wikipedia

    en.wikipedia.org/wiki/Kawasaki's_theorem

    At each step until the final fold, an accordion fold of this type will never self-intersect. The choice of i ensures that the first wedge sticks out to the left of all the other folded pieces of paper, allowing the final wedge to connect back up to it.

  3. Yoshizawa–Randlett system - Wikipedia

    en.wikipedia.org/wiki/Yoshizawa–Randlett_system

    A dashed line shows a valley fold. The paper is folded in front of itself. A dashed and dotted line shows a mountain fold (there may be one or two dots per dash depending on the author). The paper is folded behind itself, this is normally done by turning the paper over, folding a valley fold and then turning the paper back over again.

  4. Modular origami - Wikipedia

    en.wikipedia.org/wiki/Modular_origami

    Modular origami or unit origami is a multi-stage paper folding technique in which several, or sometimes many, sheets of paper are first folded into individual modules or units and then assembled into an integrated flat shape or three-dimensional structure, usually by inserting flaps into pockets created by the folding process. [3]

  5. Origami - Wikipedia

    en.wikipedia.org/wiki/Origami

    Strip folding is a combination of paper folding and paper weaving. [30] A common example of strip folding is called the Lucky Star, also called Chinese lucky star, dream star, wishing star, or simply origami star. Another common fold is the Moravian Star which is made by strip folding in 3-dimensional design to include 16 spikes. [30]

  6. Chinese paper folding - Wikipedia

    en.wikipedia.org/wiki/Chinese_paper_folding

    Maying Soong's 1948 book, The Art of Chinese Paper Folding, helped popularise recreational paper folding in the 20th century, and was possibly the first to distinguish the difference between Chinese versus Japanese paper folding – where the Chinese focus primarily on inanimate objects, such as boats or pagoda, the Japanese include representations of living forms, such as the crane. [4]

  7. Mathematics of paper folding - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_paper_folding

    With each fold a certain amount of paper is lost to potential folding. The loss function for folding paper in half in a single direction was given to be L = π t 6 ( 2 n + 4 ) ( 2 n − 1 ) {\displaystyle L={\tfrac {\pi t}{6}}(2^{n}+4)(2^{n}-1)} , where L is the minimum length of the paper (or other material), t is the material's thickness, and ...

  8. Miura fold - Wikipedia

    en.wikipedia.org/wiki/Miura_fold

    The Miura fold is a form of rigid origami, meaning that the fold can be carried out by a continuous motion in which, at each step, each parallelogram is completely flat. This property allows it to be used to fold surfaces made of rigid materials, making it distinct from the Kresling fold and Yoshimura fold which cannot be rigidly folded and ...

  9. Wet-folding - Wikipedia

    en.wikipedia.org/wiki/Wet-folding

    Wet-folding allows for increased rigidity and structure due to a process called sizing. Sizing is a water-soluble adhesive, usually methylcellulose or methyl acetate, that may be added during the manufacture of the paper. As the paper dries, the chemical bonds of the fibers of the paper tighten together which results in a crisper and stronger ...

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