I came up with a few new models for convention this year. First, since I’d loaned my Stellated Dodecahedron to Uyen for her exhibit, I folded a new one for my OUSA exhibit. This turned out to be harder than I expected and took over a month to finish. While was in the middle of it I got sidetracked and created a Dimpled Dodecahedron. Now I think I’m finally done with pentagon ideas.
One long-standing idea I’ve had was to do a single-sheet Dual Cube with a color change. This turned out the be fairly quick and easy because I was back to working in square geometry. I’d folded a single-color version of this shape previously. It’s two intersecting cubes, and the idea of the color change is to make each one of the cubes a different color. This means that the color changes need to alternate in a checker or zigzag pattern. The model begins with a 7×9 rectangle. It could be folded from a square, but then the first step is to fold under two edges. That’s how I did my test models, but this way I was able to use a larger sheet.
The sequence of drawings showing the development of the crease pattern. The last drawing shows the parts that are exposed in the final model as highlighted. From there join the two opposite ends of the paper to form a ring, then collapse the belt along the center. This results in a thick, zigzagged ridge on the inside. Finally you tuck in the tabs on ends in a pinwheel lock. I wetfolded my model by spraying a puff of water in from each end before I closed it up, then covering it with tape and string for 24 hours. When it was dry it held its shape quite nicely.
