![]() ![]() ![]() When trying this with square post-its, there are some points to note: The origami-instructions site has some clear instructions for folding Sonobe units with normal, square paper. The Sonobe Unit has it’s own wikipedia page. Examples of PHiZZ units forming a tube and a closed sphere. When trying this with square post-its, just make sure you start with the post-its in the same orientation each time, sticky side up and along the top, so that when you ‘accordion pleat it into fourths’, the sticky strip is fully in one of those fourths, and then folded fully inside the unit. Tom Hull has written some clear instructions for folding his PHiZZ unit. The units only connect in threes, so the structures get bigger more quickly. This is the simplest of the units to fold. Tom Hull’s PHiZZ (Pentagon-Hexagon Zig-Zag) Those connections can be very fiddly and take quite a while, all the time your sweat is messing with the paper. This can become an issue when you get down to connecting the last few pieces needed to complete a large structure. The more you handle each piece, the wetter (and weaker) it gets.Try to make each crease sharp and accurate, so the units are identical.If/when you get the bug, you will be folding the same units 100s of times and, as a matter of course, you will start optimising your own preferred way of folding them, to minimise effort, and maximise accuracy and speed of production. Tom Hull’s PHiZZ unit (Pentagon-Hexagon Zig-Zag).In order of relative unit-folding difficulty, easiest first: The sticky strip just means a little extra care is sometimes needed during folding, or a little more vigor when plugging some of the units together. And since these units lock together particularly well anyway (more so than many of the other units), you can build some satisfyingly large, robust, self-supporting structures. The post-its add some strength to the folded units, when compared with using plain paper. I settled on 3 particular base units which seemed to work well with square post-its. The sticky strip on the post-it has to go somewhere, and often interferes with the folding or (more often) with the plugging together afterwards. The use of post-its as the source material cuts down the possibilities. There is much to see and try in the world of modular origami ( twitter, wikipedia, pinterest, …), with myriad different base units, each of which can build many different structures. Modular Origami, units from left to right: Sonobe, Open Frame II, PHiZZ, Sonobe, Sonobe The unique angle for me (at the time) was that I resolved to use only post-its, since they were everywhere: we did Agile at work, and all thoughts had to spend some time as post-its on walls. This was modular origami, where you build (what seems like, and sometimes is) 100s of the same basic units, then plug them together to make larger structures. ![]() Glue is recommended if you do not want the model to be disassembled by curious admirers.Over the course of a couple of years, I dabbled with some origami. Model is relatively stable and does not need glue. You may need to rotate the model around and around to redo tucks that have come undone. Ideally, there should be 8 tucks to complete the assembly process.Tips: Be patient and fiddle with it a little. Assemble the two units by tucking-in the flaps from one unit into the pockets of the second unit.It will look like a kite with a visible split. On the bottom layer, flip one layer right to left.The unit should still have 4 layers on the left and 4 layers on the right side. On the top layer,flip one layer from left to right.Repeat steps 1 through 8 on another sheet of paper.Completed unit should look like a kite with 4 layers on the left and 4 layers on the right.Turn over and repeat steps 5 through 7.Repeat steps 5 and 6 on the right layer.Flip the right half of the kite towards the left.Lift one layer from left side and squash down (this is called the squash fold).Continue to collapse until you get a square shape that has two layers on the left and two layers on the right (this is called the preliminary base). Hold the paper along the fold made in step 3 and push them together.With the white side up, valley fold left to right and unfold.With the color side up, valley fold and unfold across the diagonals. ![]()
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