943: Dragon Heart Tessellation

Researching tessellations, I stumbled across a paper, written by Helena Verrill (Queens University, Kingston, Canada) that generally introduced the concept and looked at a number of common tiling patterns, but the first CP is one I had not seen before:

dragon heart

I did a small tester and loved (fluked) the collapse, and decided to scale up to a full A3 sheet, starting with a square grid. Then nested adjacent squares are layed in on diagonals to provide odd inverse hinges.

I am quite happy with this, and if more ambitious, I would fold it much smaller on a larger sheet – it would make amazing dragon skin.

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942: Triangle Waterbomb Tessellation

One of the interesting things about being associated with “Pinterest” is that their algorithms continually look for stuff it thinks will interest you. Given I only browse Origami, I get some interesting leads. I saw a triangle-based tessellation/corrugation and did a little digging:

triangle waterbomb tessellation

Seems Ron Resch, in the early 1970’s, was heavily into paper-based corrugation and this design emerged around then. The basis of this fold is 2 triangle grids, one at twice the scale of the other, offset at 30 degrees to the other. It took me a couple of failed attempts to get the crease layout to work but in retrospect is is much simpler than it seems.

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785: (235/365) Pentagonal Masu

A Masu (or box) was traditionally square and used to measure rice in Japanese kitchens. These days, masu are typically used to sip Sake out of:

Having mastered David Brill’s Square Masu, I thought it time to try the pentagonal one. Apparently the pentagonal masu exists only in Origami circles – this makes sense as the woodworking skill necessary to make this in timber breaks my brain.

Page division into 6ths (to allow overlap/join) then gentle faceting and a magic corner hinge joint results in a lovely 3d shape that feels like it has volume.

I used thickish paper and found some of the internal collapses tough work to make them behave and sit tidily but overall it is a fin fold because you really have to think through how it works before trying the collapse.

721: (171/365) Kythera Dreaming

A colleague recently spent an extended time back home on Kythera, a lovely island in Greece:

Returning to work is never easy after such time away, but I can feel and understand her longing to return. This shell is meant to evoke dream memories of Kythera. Continue reading

703: (153/365) Square Twist Tessellation

Assignment time can sometimes be boring for a teacher, especially when kids are beavering away independently:

This is a tessellation I have not tried before. Based on a square grid, diagonal squares rotate 45 degrees to lie flat again, causing pleat ripples that are cancelled out by adjacent twists – clever. Continue reading