Post is a part of a larger series (Folds): Valley and mountain fold Swivel fold Sink fold Petal fold Rabbit ear The petal fold belongs to the group of moderately complex folds. It is so because it cannot be described as a fold along a single line. Nevertheless, it is regularly performed by absolute beginners. You see, the…
Walking in the rain by Chen Xiao (Twitter. Flickr) is one of his most fascinating and, at the same time, one of his simplest models. Figure 1 - Waking in the rain by Chen Xiao I have to say that, for this model, only the crease pattern is available on the Internet. Unfortunately, the available crease pattern is…
Post is a part of a larger series (Uniaxial base): Traditional Origami Bases Uniaxial base Universal molecule Rabbit ear Every origami model in its essence has a base. No matter how complicated or simple a model is, the base is always an initial step. In traditional origami, there are only a handful of bases and all traditional origami…
Post is a part of a larger series (Advanced concepts): Elias stretch Pythagorean stretch Pythagorean stretch - advance concept (no.1) Level shifters How to Collapse Box Pleated Crease Pattern? Pythagorean stretch Introduction Origami models based on a box pleating method are on average smaller compared to the similar models based on a circle packing method. In extreme cases,…
Making dollar bill origami models is very popular these days. If you search the Internet, you will easily find thousands of origami models made out of a dollar bill. You can also search the Internet to find similar models made out of European euro or Japanese yen banknotes and you will most certainly find some. But to be…
A Ridge crease is a fold or a crease that extends inward from a polygon corner, at the same time acting as an angle bisector of that corner.
Origami is - I hope you understand - not some arbitrary, random paper folding technique that you use to create, almost by an act of magic, exciting paper models. Quite the contrary. Behind what is seemingly random paper folding there is a clear mathematical logic.
All basic elements of an origami model (flaps and rivers) must be in the same relationship, both on the stick figure and the crease pattern. Reason is quite simple. Both stick figure and crease pattern are a graphical representation of the same future model. Therefore, it is not possible for a crease pattern to show one thing and for a stick figure to show something else.
Elias stretch is an origami manoeuvre that is often used while collapsing origami models based on the Box pleating technique. It was named after Neal Elias, who popularized it in the 1970s. The technique is very simple and is used to assemble flaps (polygons) located on the paper edge. Basically, wherever you have a polygon that forms a flap and it is located on the paper edge, you can use Elias stretch manoeuvre to collapse that polygon.
In this blog post, I would like to address the problem of unused parts of a paper. This problem is not uncommon in origami. As a matter a fact, you will stumble upon it quite a lot, and in this regard box pleating technique is no exception. Simply, when polygons and rivers are arranged on a square piece of paper, it is very likely that part of a paper will be left unused.