by Krystyna Burczyk and Wojtek Burczyk
Edited by Jane Rosemarin

Editor’s note: “Once Upon a Time …” explains Krystyna Burczyk’s creative process and the mathematics underlying her modules. It also includes links to diagrams for seven models. The article is lengthy, so I divided it into two parts to speed loading time. You will find a link to Part 2 at the end of this article.

## Introduction

In this article you may find … Hm! It depends on what you would like to find.

It may be just a family of interesting (we hope) modulars based on the same principle but each different from the next. Frequently with Krystyna’s designs, an idea is explored, and it produces a family of works.

Or it may be a history of a design journey that starts from a specific, well-defined folding sequence, goes thought the land of parametric folding (where specific folds are defined by a freely chosen parameter like a position of the end point or an angle of inclination of a crease line) and after several bends finishes with freestyle folding, without specific, well-defined reference points. You may encounter such free-folding quite frequently in the case of figurative origami, but modular origami has so far been a fortress defending itself against such attempts.

Or at a higher level, you may find a design methodology we call “pushing the limits.” When we analyze a specific design, built-in constraints (frequently unconscious) are discovered. Releasing such constraints raises the limit of a specific design and allows us to discover new interesting designs.

But let Krystyna tell the story …
— Wojtek Burczyk

## Once Upon a Time in Versailles …

I’m really keen on geometrical origami. I like geometrical structures, symmetry and the simplicity of mathematical constructions. But …

In October 2010, my husband and I visited the Palace of Versailles. There we saw artworks made by the Japanese artist Takashi Murakami. We were shocked by the vulgar materials he used for his works as well as the clash of the kitsch of the palace of Louis XIV, dripping with gold, and the kitsch of the bright, “plastic” colors of the exhibited works. I couldn’t find mathematics behind these works; they just looked like a random packing of round plastic flowers.

Since then, I have asked myself: If such things are art and can be exhibited in Versailles, why can’t origami? And I started to think about origami works in a new context:

• Would it be possible to exhibit origami artworks in places like the Versailles palace?
• Would it be possible to design works as unusual and colorful as those by Takashi Murakami but with mathematics at their core?
• What ought we, as the origami community, change in the way we think about origami to achieve such goals?
• Is paper noble enough?

Inspired by the exhibition, I wanted to create something that was:

• Structural
• Different from the forms known as modular origami
• Colorful
• Rich in form and possibilities

To achieve this goal, I started to consider how to combine two contrary ideas:

• Regular geometric structure as the base of a form
• Modules unusual for geometric origami — nonsymmetrical (even without rotational symmetry) and able to connect in different configurations

## Versailles Module

At that time, I already had experience with spirals as a means of joining modules as an alternative to the widely used flap-and-pocket system. Spirals were proposed as a way to join modules by Herman van Goubergen. He proposed three systems to join modules based on paper tension in 2000. One of them was his Curler Unit (Herman van Goubergen, “Curler unit,” British Origami 205 (2000): 17-18, https://britishorigami.info/academic/mathematics/curler-units/. We saw it for the first time in 2000 at the 2nd Scandinavian Origami Meeting. Wojtek “discovered” the curler model at Herman’s exhibition table and learned this new technique directly from the master. A few months later, he convinced me to try this technique, and I started to create modulars using spirals, which I named Twirls.

Spirals allow for a juncture tolerant of distance and angle. As opposed to flap-and-pocket connections, the angles and distance between modules do not need to be constructed exactly. The flexibility of a paper spiral allows some tolerance both in terms of the angle between modules and the distance between them. But initially, I had been convinced that my twirl modules had to contain some basic features of the waterbomb base with twisted flaps proposed by Herman van Goubergen, namely the mirror and rotational symmetry before twisting and the rotational symmetry after twisting.

Visiting the Murakami exhibition gave rise to an idea to make something contrary to these basic features. And the Versailles module was born.

Instead of starting from folding in half along the diagonals and the medians and creating four lines equally distributed around the center of the paper (as in the waterbomb base), I decided to use the construction of the 60° angle and to start from the trisection of the 90° angle at the corner of the paper. The folding process of the module may be briefly described in the following steps:

1. Divide an angle in a corner into three angles of 30°.
2. Fold a part of a diagonal.
3. Fold between two points.
4. Collapse like a rabbit ear.
5. Twist the flaps.

But what could I do with so weird and irregular a module, when polyhedral structures exhibit so much symmetry? I had already developed the macro-module approach (combining several modules to make a larger one) in my earlier works (see my book Twirl Kusudamas 1, [2008]). A few modules are joined together to form a macro-module that has more symmetry and corresponds to a regular polygon in a polyhedron. I still thought that a vortex formed by spirals must contain the same spirals to maintain the stability of the final form. As the module does not have rotational symmetry, the mirror reflection of the crease pattern results in a different module (twisting is still the same).

My first Versailles model used macro-modules of six modules (three left modules and three right modules), with the longest spiral going to the central vortex and smaller spirals joining at the periphery, a short with a short one and a medium with a medium one. Use of two chiral forms was obvious to me, because at that time I thought it was necessary to keep vortexes uniform (only one type of spiral in a vortex).

The macro-module corresponds to a hexagon, and I used the structure of the truncated octahedron to form a model.

In a similar way, five left modules and five right modules give a decagonal macro-module (ten modules) that is used to form a kusudama based on the truncated dodecahedron.

The result was astonishing. The long spirals gave the organic feeling of a flower sticking out from a ball formed by smaller spirals. Finally, I had obtained a real kusudama – a ball of flowers.

For detailed diagrams of the Versailles kusudama 8 x 6 With Holes, see the PDF.

## How to Join the Versailles Modules

Initially, I thought that a vortex must be homogeneous (built from one type of spiral only) to be stable. In fact, the spiral system is more flexible than I had expected and allows for different sizes of spirals to be joined together. When I noticed that “same modules in the same vortex” was a constraint that could be lifted, the family of Versailles designs increased immediately. I could make macro-modules with an odd number of modules (for instance pentagons), and more structures became available to use as a base for a Versailles kusudama. The different orientation of modules also increased the number of possible models. And I realized that a macro-module could be not only a building block for a kusudama but also a stand-alone model.

The three flowers above are built from exactly the same modules used for the kusudamas shown in the previous figure and differ only in the orientation of the modules (different spirals form the central vortex). In Pentagonal Flower 1, only left modules were used, with spiral 1 going to the center of the flower. In Pentagonal Flower 2, spiral 2 goes to the center. In Pentagonal Flower 3, spiral 3 goes to the center. Just a change of orientation caused a dramatic change in appearance. And of course, 12 of each of these macro-modules may be used to make a kusudama based on the dodecahedron.

## An Artist Does Not Make Errors, an Artist Creates

The wrong position of a module in the hand while twisting is a common error made by participants in my workshops. But an artist does not make errors. An artist creates.

The Versailles module twisted upside-down has a different appearance that enlarges the range of possible models. Again, the module is nonsymmetrical, and a different orientation of the module yields different flowers, and, of course, new kusudamas.

For detailed diagrams of Versailles: On the Contrary, see the PDF.

## Structure of a Module

Let us recap the construction and the structure of the Versailles module. The construction has the following steps:

1. Fold the angle α of 30° and form a triangle ABX. The triangle becomes a large petal, and the point X is the reference in step 3.
2. Bisect the rest of the right angle into angles β and γ.
3. Bisect the right angle at D. Y is the crossing point of the lines constructed in steps 2 and 3.
4. Join points X and Y.
5. Collapse the module to a flat form. A new line a (a pivot axis of the flaps of the module) arises when the module is flattened.
6. Twist the three flaps into spirals.

The module has three different spirals (denoted 1, 2, 3). Spiral 1 (the longest one) has a large petal flap.

We have already seen different possibilities arising from the structure (orientation of modules when joined, an underlying polyhedron structure). Now we will look more carefully into the folding sequence. There are new possibilities hidden there.

## Modification 1: Releasing the Constraints. The Same Way of Folding, but Another First Angle α

When we go away from the details of folding sequence and describe the folding process as a geometric construction, we can easily notice that the construction may be easily modified. We may reformulate step 1 into:

1. Fold an angle α, and denote X as the point of the intersection of the folding line and the edge of the sheet.

Then the fold line divides the initial square into a triangle and a trapezoid (a quadrilateral with two parallel sides) or two triangles. The area below the line is a triangle ABX (as in the base construction) if ? < 45°. When the first fold is the diagonal (? = 45°), the square is divided into two triangles, the unfolded one becomes a petal and the other triangle is folded into a rabbit ear. When ? > 45°, the unfolded part forms a trapezoidal sail and the remaining part is a triangle folded into a rabbit ear. But the last case is another story that we will tell separately in the future.