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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. A thin line shows where a previous fold has creased the paper. A dotted line shows a previous fold that's hidden behind other paper, or sometimes shows a fold that's not yet made.
A concertina fold, also known as a zig-zag fold, accordion fold or z-fold, is a continuous parallel folding of brochures and similar printed material in an accordion-like fashion, that is with folds alternatively made to the front and back in zig-zag folds. Because they do not nest (as in Letter Folds) panels can be the same size.
Orihon consist of a long strip of paper with writing on one side that is then compacted by folding in zig-zag fashion. The orihon format is considered a step between a scroll and a codex . The style of folding is similar to that of the air bellows of a concertina or accordion , such that every written page faces another written page when the ...
The accordion-fold books were easier to handle than bound scrolls while reading and reciting sutras. The advantage was that it was now possible to flip to a reference without unfolding the entire document. Woodblock prints also made the new format easier by allowing two mirror images to be easily replicated on a single sheet.
Then, accordion fold the pattern, starting with angle α 2i + 1 and alternating between mountain and valley folds, placing each angular wedge of the paper below the previous folds. At each step until the final fold, an accordion fold of this type will never self-intersect.
The accordion is one of several European inventions of the early 19th century that use free reeds driven by a bellows. An instrument called accordion was first patented in 1829 by Cyrill Demian in Vienna. [notes 4] Demian's instrument bore little resemblance to modern instruments. It only had a left-hand buttonboard, with the right hand simply ...
3. The Envelope. Simple, clean, classic. There’s nothing cheesy about this envelope-shaped napkin. Level of Difficulty: 2 How to Make It: Place the napkin on the table so that one corner is ...
A bi-fold brochure results in four panels (two panels on each side), while a tri-fold results in six panels (three panels on each side). [ 5 ] Other brochure fold arrangements are possible: the accordion or "z-fold" method, the "c-fold" method, etc. Larger sheets, such as those with detailed maps or expansive photo spreads, are folded into four ...