By Rona Gurkewitz
Innovative, stimulating and hard booklet combines the artwork of paperfolding with making polyhedra-based versions. tasks variety from the rather uncomplicated dice and tetrahedron to such mind-boggling fabrications because the double pentagonal pyramid and the truncated hexadecahedron. directions and diagrams incorporated.
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Extra info for 3-D Geometric Origami
Modular origami enthusiasts of course find the ingenuity involved in locking pieces together aesthetically pleasing. It is also often neater to lock than use tape or glue. In this book the main type of lock used is what we call the Point and Pocket lock. In this lock one module supplies a point and a second module supplies a pocket for the point to be inserted into. Usually the assembled point and pocket are refolded in some way that holds the model together. In the diagrams, dotted lines may be used to indicate where a point is to be inserted into a pocket.
Fullerene is made up of sixty carbon atoms arranged as on the corners of a truncated icosahedron which is roughly the shape of a soccer ball. Crystallography: Many crystals take the shape of polyhedra. For example, fluorite is octahedral; sugar, gold and copper are cubic. Part Two Making Models (Clockwise) Dodecahedron Flower Ball, page 39 Great dodecahedron (from Pentagon modules, page 58) Great dodecahedron (from Simplified Pentagon modules, page 60) Using the Diagrams and Directions Overview In using the diagrams for a model you should first familiarize yourself with the underlying polyhedra.
Mark points M, C, and N on the folded sheet and draw lines MC and CN using a ruler. With a pair of sharp scissors cut lines MC and CN through both layers of the folded sheet. The pentagon, folded in half, is KMCN. Hexagons How to Make Hexagons by Bennett Arnstein From a Rectangle: From a Square: One set of Siamese-Twin hexagons from a rectangle folded to make 16 equilateral triangles Eighteen hexagons from a rectangle folded to make an equilateral triangle tessellation for a snub cube flat pattern How to Fold a Square or Rectangle into Three Equal Parts by Lewis Simon & Terry Hall Part Four Diagrams of Models (Above) Icosahedron (Below) Octahedron (Both composed of Triangle Edge modules, page 53) Simple Constructions to Try First Inflatable Irregular Octahedron by Bob Voelker Puzzle Cube by Bob Neale Tetrahedron from Siamese-Twin Hexagons by Rona Gurkewitz Two-Piece Octahedron Skeleton by Bennett Arnstein Truncated Tetrahedron from Hexagons by Rona Gurkewitz Start with eight hexagons.
3-D Geometric Origami by Rona Gurkewitz