Paper mechanisms in movable books, such as v-folds, turning paper wheels and tunnel books, and folds that work as mechanisms, each drawn as stepped diagrams checked in a rigid-paper model; no modern designers' pop-ups and no reading of origami crease patterns.
A v-fold pop-up is glued to both pages across the gutter, so turning the pages lifts it and lays it down again. How it moves, what jams it, and parallel folds.
Picture credit (illustration)
Illustration: Fold, Knot & Bind. Generated schematic illustration — not a photograph or historical record. Reuse: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/), to the extent Fold, Knot & Bind holds rights in this image.
"Volvelle page, leaf 18r, from Astronomicum Caesareum" (1540), Petrus Apianus — https://commons.wikimedia.org/wiki/File:Astronomicum_Caesareum._1540_(149346554).jpg — Public domain in US: published 1540; EU: author Petrus Apianus d. 1552; Public Domain Mark by the National Library of Poland; modified: reduced in size
"Lane's Telescopic View: The Ceremony of Her Majesty Opening the Great Exhibition (partially open)" by Special Collections at Johns Hopkins University from Baltimore City, United States — https://commons.wikimedia.org/wiki/File:Lane%27s_Telescopic_View_-_The_Ceremony_of_Her_Majesty_Opening_the_Great_Exhibition_(partially_open).jpg — CC BY 2.0 (https://creativecommons.org/licenses/by/2.0/)
Illustration: Fold, Knot & Bind. Generated schematic illustration — not a photograph or historical record. Reuse: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/), to the extent Fold, Knot & Bind holds rights in this image.
Analytics cookie?
Google Analytics would set a cookie to count visits. Cloudflare Web Analytics, which sets no cookie, runs either way, and the site carries no ads. Stored and sent
Illustration
