I stumbled across the instructions for a glorious checkerboard kusudama designed by Andrey Ermakov, an insanely talented designer from Russia:
Russian Lilac unit
I decided to try and make ONE module – an exhausting process that starts with a HEXAGON initially divided into a 16 grid, then you dance through moves that flash and hide the reverse colour of the paper until you get this lovely pattern. This took me in excess of 2 hours!!! For ONE unit!!!!! You then crenelate and interweave them to make a spikey ball, tucking in tips to complete the tessellated surfaces.
Had I no life, and a LOT of paper, I would consider making all 30(!?!?!?!) of these things necessary to make the most complex spikey ball there is – a beauty that is not within my reach (for now) due to time pressures.
It is a timely reminder that astonishing and beautiful things come from Russia; ugly political and military action does not diminish this fact.
So to avoid doing the growing list of things I should be doing, I decided on some procrastigami:
One of the many “I must fold these” models from Xander Perrott’s forthcoming books, this is “Laveau”, a lovely 30 unit spikey flower ball that makes good use of duo paper.
Each unit, based on a 1:root(3) rectangle, folded from Tuttle Vibrant duo, I chose limey/crimson paper and began folding – I always love the almost meditative state you enter when unit folding on a production line – much the same as gridding before box pleating and tessellations.
As part of the privilege of test-folding models for a forthcoming book, I also had access to brilliant new designs. I decided I must fold one of these for myself:
This is “Star Virus”, a relative of “Space Virus” that I had already folded (from his previous book) waaaaay back in 2020 at the beginning of the global pandemic.
The form of this kusudama is glorious – star-shaped protuberances from a glorious faceted sphere – reminiscent of the most popular visualisation of the Covid 19 virus, I decided to fold it in royal purple and yellow because Covid is mutating all the time, and this I see as a mutation of the original in every way.
They say “if at first you don’t succeed, mutate and try again” seems to be the pandemic trajectory – this model has modules that are refined, positively lock and the whole spikey ball was such fun to fold.
Test folding is different to model folding, the brief is to see how easy to follow the diagrams are, how reproducible the forms are and what sense the written instructions make.
As all the models in this book are unit-based, I folded 3 or 4 of the modules (rather than the entire 30+) to check the 2 types of joins and how regular the construction methods can become. There is a wonderful mix and variety of spikey balls in this new (as yet unpublished) collection, and the skill levels to complete them range from fairly easy to nearly impossible – which is good, challenges abound for all levels of folder competence.
Unit and join testing – 3+5joints (“Star Virus” kusudama)
Xander commonly uses some funky paper ratios in his base-papers. Commonly 1:root(3), but this collection uses 2:root(3) and more exotically 6:5root(3). The paper ratio allows construction of accurate angles (many based of multiples of 60 degrees), and the book demonstrates nicely how to cut sheets of this ratio from more conventional sized paper.
Each kusudama has it’s own quirks, tricks and stress points, all require accuracy and nice paper (most showcase duo coloured paper in flamboyant and wondrous ways).
I have not folded a book “cover to cover” since I was a kid (who only owned a only couple of origami books) – it was an intense but hopefully useful journey as I made notes about the instruction set, unit folding and assembly process, subsequently passing this on to Xander for his consideration.
As I approach retirement age, I can see myself doing more in the meta origami world, having already established myself as an origami book editor and test folder – having time to do this without having to shoe-horn it inbetween school commitments is a luxury I am looking forward to.
An invitation went out on Fakebook to join a “fold along” session with Fergus Currie and, although it was after 11pm local time I thought why not:
Fergus taught the module then construction of a 4-part modular Frustum (a truncated pyramid) – an ingenius and “frustrating” model in that the lock between modules is accomplished using a “latch crimp” tab inside the bent gusset pocket, making the actual construction a little fiddly.
I found I needed to ease the 3rd and 4th modules in place using long-nosed tweezers, when it sits right it locks tight but requires a bit of a controlled jiggle to get it to be seated just right. The final module is a bit of a challenge to insert without dislocating the two either side of it.
Patience and tweezers finally won over and the top half finally was locked tight and tidy, then a simple weave on the bottom flaps complete a lovely truncated pyramid. Material thickness is an issue here – the tab-pocket system assumes material of negligible thickness. If you use heavier paper you need to fractionally adjust either the pocket depth or the tab length – fortunately there are a couple of fold junctures that make this easier.
Having recently purchased a bumper pack of 6″ duo paper, I was itching to fold something with it. Given we are in a new wave of Covid-19 (Omicron), I thought a virus-like kusudama was in order:
This is Xander Perrott’s lovely modular design “Minaret”, a 30-piece ball of wonder.
Each piece is based on a 1: root(3) proportioned rectangles, intricately collapsed into beams with tabs/pockets on each end.
To celebrate the release of his lovely new book of modular polyhedra (must get me one), Fergus Currie offered an early morning (for me at least on the opposite side of the planet) workshop on how to fold his second stellation of a cuboctahedron:
I set an alarm, awoke at 1am and folded along with Fergus.
I like this modular a LOT – each vertex is a single piece of paper – it works well with paper that has only one side printed or printer paper. The design is ingenius, the angles odd and exacting but you get into a groove and they make sense in the end.
I went into production line, and using the template to establish the initial odd division, I found that using a fine ball stylus and ruler it was easier to lay in the intermediate creases with the accuracy to make the vertices crisp and accurate.
Once I had 24 units, I then interlocked them in groups of 3 using the narrow tabs and pockets – these interlock really tightly and I could not imagine trying to do these later. I then joined the triples as they tile on longer tab-pocket sets that slide together with a little encouragement. Eventually the units combine to become this wonderful spikey ball with unique geometry.
Clocking on for another round of procrastigami, I decided to give the first of the “twister” series a go:
Twister A – 2×2 molecules
This is “Twister A”, designed by Ilan Garibi, a lovely dimensional fold with a final twist to finish it off.
I have folded a few square twists, this one perches a twist on top of the intersection of opposing ridges, contains remarkably few folds on top of the base square grid.
Twister A Single Molecule
The basic molecule tiles awkwardly – because of the directionality (it forms in a clockwise direction) of the molecule, you have to reverse adjacent molecules if you want them to line up.
Exploring Ilan Garibi’s lovely book “Origami Tessellations for Everybody”, the next “family” of folds starts off with “Childhood” and then evolves into more of the same:
Childhood-Evolved (4×4 molecules)
This is almost a corrugation, as there are nearly no layers overlaying others – the surface treatment is deliciously dimensional, and the distortions are caused by paper tension and torsion of the underlying square-twists.
“Childhood” molecule
I started with standard cotton-based photocopy paper (which for me is a LOT like thin Elephant Hide) and laid in a square grid. Both childhood and childhood-evolved use off divisions. I folded a regular division (halves or thirds), then halved until I was close to the required grid sizes, then sliced off unneeded units before laying in the wedge-shaped mountain creases.
This is ‘Red Flower’, the base fold of which there re many variations, but the base molecule is based on a square grid and (for single molecule at least) simple to pre-crease and collapse.
When you scale up, accuracy shows itself as important – slight errors mean that the internal collapses twist the whole sheet out of shape.
Our local community Library has display cases, I have more origami models in storage that I can count any more so offered to provide some models for a month or so for a display:
The interesting part of this was selecting a variety of models to demonstrate the breadth of the discipline. The challenge was to select only enough models to fill the small display cases.
I decided on a varied collection of single sheet figures, modulars and old favourites, the mix is eclectic and dizzying.
The exhibit is on display at least until the end of August, possibly longer.
Origami designer Fergus Curry shared with me the diagrams for his Rhombic Triacontahedon, I was determined to give it a try:
30 squares in 5 colours, some clever unit folding later and I had the bits needed to construct this little gem. A positive tab-pocket mechanism, some strategic placement of colours and pretty soon you have a lovely sphere made of rhombi. [edit]: A friend (JZag) pointed out this is a D30 (DnD reference there) – nice and nerdy.
When I saw the folded form I thought there must be some trickery here:
All I had access to is the crease pattern (CP) for this model, and, given I am trying to develop my CP solving skills I thought it fair game to give it a try.
Based on a 16×16 grid, some strategic box pleating and an ingenious colour change we have a classic music stand, 3 shapely legs and a piece of sheet music that is a different colour to the stand – magic.
I like this model a lot – it just sort of coalesced in to a successful model for me, although the first fold was on paper that was same both sides but I could see the potential for colour change and had to fold it in duo paper,
A few years back, I was gifted a portfolio of amazing vintage paisley paper by the Albions. I have held back folding it until I found something that would do it justice:
I pulled a sheet (there are over a dozen different paisleys in the folio), it opened up into a large sheet that I derived a way of dividing it into 30 equal squares – the basis on this kusudama.
This is a stellated dodecahedron, with lovely ridges, pentagonal faces and a wonderfully tactile design. 30 modules, based on 60 degree division, wonderfully deep pockets and positive lock, initially it is easy to put together. You can have a go yourself: https://www.youtube.com/watch?v=MzeQBFay8NY
Jeannine Mosely is a legend in the modular origami world, and her early morning session was one I hoped to be awake enough to follow:
This nightmare of a model has 12 modules (4 colours, 3 sheets each), and the actual module is really simple (based primarily on a 60 degree corrugation through a fan fold on a 1: root 3 sized paper).
Part of the session was devoted to a neato method of cutting a square down to the correct proportions, a small time in folding the module and the balance in construction, which is a bit of a mind-fuck.
Once you “get” the interleaving, it sort of makes sense, but the shape is not stable until the last colour goes in, making construction really fiddly.
The resultant model is wonderful, and I know I will fold it again (I might choose nicer colours, and perhaps make it a little bigger). Jeannine’s instructions were clear and she has a good common sense presentation style.
