| This is a partial index of the folds on this site. It is divided into two parts: Letterfolds and Envelope Folds. For a complete index, refer to the text-only fold index. | ||
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| Frame Ratio | Fold Name | Info |
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Basic Letterfold | This is the traditional method of folding envelopes prior to machine-made envelopes. It is made from any oblong sheet of paper. |
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Fern Letterfold | Traditional. Silver rectangle (1:square root of 2). Compare variations by L. Fernadez, Pajarita 30 and P. Jackson, Origami and Papercraft. Compare flap variation on "Purse," G.M. Gross, New Ideas for Paperfolding. |
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K-Letterfold | Silver rectangle. Flap slotted into aperture. Adapted from a fold attributed to Thoke Yenn; reference occurs in British Origami Society Magazine 116 for origin and conjuring trick. |
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M-Letterfold | Silver rectangle (1:square root of 3). Loose flap must be glued down to seal. Traditional, possibly French. Postage stamp seals flap. Reference occurs in British Origami Society Magazine 115. Compare variation (M. Grand), ELFA Library. |
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| Frame Ratio | Fold Name | Info |
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Bar Envelope | Silver rectangle (1:square root of 3). Flap slotted into aperture. Adapted from a fold attributed to Frances Levangia; reference occurs in British Origami Society Magazine 114 together with alternative folding method and background of creator. |
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Butterfly Envelope | Made from a square sheet of paper. Loose flap must be glued down to seal. Origin uncertain but thought to have been on display at Verona convention '88. |
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Valentine Envelope | Made from a square sheet of paper. Flap slotted into aperture. Adapted from a fold attributed to Sumiko Momotani (referenced in British Origami Society Magazine, 128) and Y. and S. Momotani, Image and Expression. See also Hawk Envelope. and Bunny Envelope, K. Kitamura, Origami Kawaii, (ELFA library). |
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Hawk Envelope | Made from a square sheet of paper. Loose flap must be glued down to seal. Adapted from a fold attributed to H. Kumasaka (from whose initials its name is taken), OKK vol. 4, '80, NOA (Japanese Origami Society) vol. 2, Japanese publication. Heart shape can be formed on tip of flap thus producing a Valentine envelope. Compare Kumasaka version. |
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Letterfolds |Envelope Folds | Text-Only Fold Index | ELF Intro |
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Illustrations (c) John Cunliffe. Used with permission.