### Videos: The Advent of Tess 2023 - 25 Days of Tessellation Tutorials

A new series of instructional videos to get you started with tessellations ... or to fold just for fun.

### Fractal Origami for Beginners

by Ushio Ikegami
This is the first-ever published guide to fractal folding. If you find Ushio, give him John’s message.

### Diagrams: The Einstein Hat, a Mathematical Puzzle

An origami version of a newly discovered solution to a longstanding geometric problem.

### The Complete Blintz Part 10: Generalizing the Blintz

What are the properties of the blintz when folded from the square and other shapes?

A tessellation that results in a curved surface with varied levels of reflection.

### The Complete Blintz Part 9: The Pentagonal Lemon Squeezer

Deconstructing the Fortune Teller to make a decorative, functional pentagonal version.

### Diagrams: Aquatic Boy

If you like box pleating, crease patterns and cartoons, this model is for you.

### Diagrams: Box With Woven Triangles IV

A printable crease pattern and photo diagrams for the top along with directions for making a masu box bottom to fit.

### The Complete Blintz Part 5: Creating via Blintzing

An essay on the design possibilities of multiple blintzes.

### The Complete Blintz Part 1: The Yakko

The first installment of a series on the history of the blintz fold.

### Diagrams: Clover Heart 4

Clover Heart 4 is the fourth and final model in a series of Clover Hearts published in consecutive issues of The Fold. This one has the proportionately smallest clover.

### Diagrams: Clover Heart 3

Design and diagrams by Meenakshi Mukerji, text by Sara Adams
Learn to fold Clover Heart 3, the third in a series of designs by Meenakshi Mukerji.

### Clover Heart 1

A crease pattern and notes for folding a delightful heart with a color-change clover. Designed by Meenakshi Mukerji, it's a confluence of the works of Shuzo Fujimoto and Francis Ow. The clover can be extended into Fujimoto's Hydrangea as well as most designs that start with a four-sink base or crossed box pleat.

### Diagrams: Matthew's Piggy

by Matthew Wong
A piggy bank model from Hong Kong folder Matthew Wong.

### Diagrams: Triple Heart with Color Change

Ralph Jones
Diagrams/CP for a delightful triple heart with color change from a 2:1 rectangle of duo paper.

### Crease Pattern: Octagonal Iso-Area Self-Similar Flower

A fun crease pattern that can repeat infinitely to the center folds an octagon into a geometric flower design, where the front and back of the paper look the same.

### Diagrams: Chien Tim

Nicolas Terry offer members only an opportunity to fold Chien Tim in celebration of Lunar New Year of the Dog: a complex model for those of you seeking a challenge.

### Pre-scoring Machines Demystified

Kate Lukasheva offers a very interesting Q&A on pre-scoring machines.

### Crease Pattern: Distorta2016

Here is Distorta2016 by Alessandro Beber.

### Crease Patterns: Distorta2009

Here are some crease patterns for a number of Alessandro Beber's beautiful high intermediate creations.

### Origami Reference Points: Folding Square Grids with Haga's Method

by Jon Tucker
This articles shows how to construct arbitrary square grids via folding alone, using Haga's First Theorem.

### Review: "3D Origami Art" by Jun Mitani

Here is a timely review of Jun Mitani's 3-D Origami by Ekaterina Lukasheva

### Crease Pattern: Propellers Tessellation

An exploration of a propeller tessellation formed from standard square twists.

### Crease Pattern: Young Alsatian Girl

by Nguyen Quang Do Lisa
A crease pattern study of a young Alsatian girl designed by Nguyen Quang Do Lisa.

### Theme and Variation

by Thomas R. Crain
This article explores several variations in a square twist crease pattern that may be achieved simply by varying the mountain/valley assignment of the same underlying crease pattern.

### Orange Spheres and Odd Even Apples

by Hans Dybkjær
This article tells the tale of the higher spheres of oranges and apples: How I got there, and how to make them.

### Introducing Building Block Units

Building Block Units (BBU) are a new family of modular origami units, with over one hundred different interlocking module designs.

### Video: Origami Diagramming 1

The first in a series on origami diagramming, this video focus on using Inkscape, a free vector drawing program, to draw origami crease patterns precisely.

### Crease Pattern: House with Windows

by Clifford Jones
A progressive crease pattern for a box-pleated house with latticed windows by Clifford Jones.

### Folding Wood

The story of a process developed for folding rigid wood laminate, with crease patterns, images, and recipes.

### Crease Patterns: 3D Wall and Octet Truss

Two 3D tessellations: a brick wall and an octahedral-tetrahedral truss network.

### Editorial: Reading and Folding Crease Patterns

An essay about origami designer Seth Friedman's experiences involving reading and folding from Crease Patterns.

### One Ellipse to Rule Them All

Curved-crease origami can be designed by considering the properties of ruling lines, lines on the crease pattern that remain straight in the 3D folded form. This technique was developed by David Huffman, who identified conic section curves has being particularly suitable for curved-crease designs. Two examples using ellipses are given as crease patterns.

### Cool Iso-area Hexagon Collapses

by Thomas Hull
Several variations on a hexagon-based, iso-area, geometric collapse method are shown. Some of these were taught at the 2013 OrigamiUSA Annual Convention in New York City.

### Crease Pattern: Dragonfly

A crease pattern for a box-pleated dragonfly.

### Designing and Folding Curved-Crease Pleated Forms

This article aimed at novice folders examines the design and folding process for geometric bowl and vase models characterized by a series of curved pleats.

### Crease Pattern: Skew-pleated Beetle

This month's crease pattern folds a symmetric subject on an inherently unsymmetric base.

### Crease Pattern: Katydid HP

A hex-pleated design for a long-legged katydid with some discussion of the design principles.

### Crease pattern: Hexonion

A rotationally symmetric solid curved fold, folded from a regular hexagon.

### Folding a Golden Gnomon Box

by Arnold Tubis, John Andrisan, and Christopher Pooley
Part two in a series examining the mathematics behind the golden ratio in some geometric boxes.

### Diagrams: The Zipper Tessellation and Variations

The Zipper Tessellation is a good starting point for many variations, such as the Zipper Ring and Vase, presented here with crease patterns and some diagrams.

### A Class of $$N$$-Pointed 3-D Stars

by Arnold Tubis and Carmen Sprung
Tubis and Sprung show that the same starting shapes used previously to create generalized masu boxes [Tubis and Pooley 2012] can be used to produce $$n$$-pointed 3D stars.

### Generalized N-Sided Masus

by Arnold Tubis and Christopher Pooley
Tubis and Pooley explore $$n$$-sided generalizations of the masu and one of its many decorative-lids. Detailed video instructions are provided at the Origami Player site.

Learn the story behind the Google Doodle for March 14, 2012, which honored Akira Yoshizawa, and fold your own Google logo.

### Folding Waves, Part 1

Thomas Hull
This wave model is fun to fold and has a lot of math in it!

### Crease Pattern: Wave24

A pleated cone sliced by multiple planes creates this geometric model reminiscent of a breaking wave.

### Crease Pattern: One-Cut Double Happiness

by Erik Demaine, Martin Demaine, Liping Ma, Patsy Wang-Iverson
This paper presents a crease pattern for one-cut double happiness.

### Crease Pattern: Trees

Crease patterns and video for two modular tree units with variations.

### Crease Pattern: Hexabox

A rotationally symmetric geometric shape, folded from a hexagon, based on Jeannine Mosely's "Bud".

### Diagrams: Rose

by Cheng Chit Leong
Diagrams for a rose by Cheng Chit Leong, demonstrating the use of curved couplets in his designs.

### Folding Irrational Proportions

This article describes techniques for finding reference points for models with square root of two ratios which are commonly found in 22.5 degree designs.

### Diagrams: Robert Neale's Dragon

by Robert Neale
Diagrams for Robert Neale's classic dragon!

### Diagramming: Curves and Crease Patterns

by Andrew Hudson
The addition of curvature introduces some situations which conventional crease patterns are not good at dealing with. I present some ideas for incorporating surface curvature into crease patterns, and discuss why I chose these schematics.

### Crease Pattern: Waterdragon

Crease pattern and design notes for a complex asymmetric waterdragon.

### Crease Pattern: Honeycomb

With many tessellations, the obvious way to design the crease pattern doesn't necessarily result in a foldable pattern. By adding extra creases to the pattern, you can sometimes find an alternate way to the finished form, as you'll see in this geometric pattern.

### Crease Pattern: Dragon in Parque Güell

By Toshikazu Kawasaki
Crease pattern for Toshikazu Kawasaki's Dragon inspired by a statue in Barcelona. OrigamiUSA members have contributed diagrams and a video tutorial for this model as well.

### Making a Successful Crease Pattern, part 2

by Andrew Hudson
Finishing up the discussion about crease patterns, focusing on audience considerations and the use of crease patterns as a sequenced element.

### Crease Pattern: Hex Pleated Brown Widow

Explore hex pleating further with this long- and variable-length-legged spider design.

### Crease Pattern Analysis: Werewolf

The first in a series, analyzing crease patterns. In this article, we take a big picture look at a Werewolf designed by <a href="http://www.flickr.com/photos/53465278@N02/" target="blank">Jacob Rossman</a>.

### Making a Successful Crease Pattern, part 1

by Andrew Hudson
Making a crease pattern takes less time than drawing a full diagram, but because of the technical difficulty, most folders don't like working with them. Here's some ideas about how to make things easier without spending dozens of hours on a full diagram.

### Crease Pattern: Hex-Pleated Scarab Beetle

This crease pattern introduces a new form of uniaxial base design, called <i>hex pleating</i> and describes how to use technique technique.

### Geometric Folding Algorithms: Free Video Lectures

Course information for an MIT graduate course in Geometric Folding Algorithms.

### Review: "Eric Joisel: The Magician of Origami"

A review of a book which pays tribute to the inspiring and unrivaled legacy of one of origami's greatest masters.