ABSTRACT
This chapter explains three-dimensional (3D) origami design methods divided into several categories. It introduces more advanced origami creations—some are made by a combination of several design methods and others in fascinating shapes extended beyond the design methods explained so far. Each of them is quite unique, with an individual theoretical background or special cut-ins. The Diamond-Cut Hat shape presents brilliant shades made by radially arranged triangles. Bavarian Mold is an example of a torus shape realized by "cutting," a prohibited technique in origami. Accordion Capsule has a bellows at the center and a hemisphere on the right and left sides. Whirl pattern is made with combined concentric rings of curved lines. The shape is flat as is but becomes an orderly concavo-convex by folding back the two portions between the straight mountain and valley fold lines on the crease pattern.
