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  2. Eyelash yarn - Wikipedia

    en.wikipedia.org/wiki/Eyelash_yarn

    A cardigan knitted with eyelash yarn. Eyelash yarn is a type of novelty yarn. [1] It has a thread base, with several long strands spaced at even intervals that jut out at an angle from the main strand. The long strands, or hair, can be metallic, opalescent, matte, or a combination of types. The hair can be curly or straight and can be different ...

  3. Geometric Folding Algorithms - Wikipedia

    en.wikipedia.org/wiki/Geometric_Folding_Algorithms

    It includes the NP-completeness of testing flat foldability, [2] the problem of map folding (determining whether a pattern of mountain and valley folds forming a square grid can be folded flat), [2] [4] the work of Robert J. Lang using tree structures and circle packing to automate the design of origami folding patterns, [2] [4] the fold-and ...

  4. 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 ...

  5. Letterlocking - Wikipedia

    en.wikipedia.org/wiki/Letterlocking

    Letterlocking is the act of folding and securing a written message (such as a letter) on papyrus, parchment, or paper, without requiring it to be contained in an envelope or packet. It is a traditional method of document security that utilizes folding and cutting. [ 1 ]

  6. Folding machine - Wikipedia

    en.wikipedia.org/wiki/Folding_machine

    A folding machine Buckle folding machine. A folding machine is a machine used primarily for the folding of paper.Folding is the sharp-edged bending of paper webs or sheets under pressure at a prepared or unprepared bending point along a straight line according to specified dimensions and folding layouts. [1]

  7. Category:Paper folding - Wikipedia

    en.wikipedia.org/wiki/Category:Paper_folding

    Pages in category "Paper folding" The following 37 pages are in this category, out of 37 total. This list may not reflect recent changes. * Origami; Paper craft; B.

  8. Envelope - Wikipedia

    en.wikipedia.org/wiki/Envelope

    Traditional envelopes are made from sheets of paper cut to one of three shapes: a rhombus, a short-arm cross or a kite. These shapes allow the envelope structure to be made by folding the sheet sides around a central rectangular area. In this manner, a rectangle-faced enclosure is formed with an arrangement of four flaps on the reverse side.

  9. Iris folding - Wikipedia

    en.wikipedia.org/wiki/Iris_folding

    Iris folding is done with a pattern. The crafter uses the finished product to decorate the front of a greeting card, as a scrapbook embellishment, to decor a pattern, strips of colored paper, permanent transparent tape, cutting tools and a temporary tape such as painters tape. The temporary tape is used to hold the pattern in place while the ...

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