Yenn’s “Skew Tetrahedron” and “Stand in The Corner of The Desk Drawer Box”

Yenn's "Skew Tetrahedron"

Yenn's "Stand in The Corner of The Desk Drawer Box"

Thanks to the “calendar” feature over on the homepage of the Origami Database, I discovered that today is the anniversay of Thoki Yenn’s birthday. It seemed fitting to go fold something by Thoki, so I popped over to the BOS website and hunted up their archive of Thoki’s old site. (http://www.britishorigami.info/academic/thok/index.html)

I picked two somewhat random models that I’d never folded before, and here they are.

The box is pretty cool, it’s basically a cube but with one vertical corner chopped off (so as to take up less room in the drawer, I’m thinking.) Fun shape, though.

The tetrahedron is very odd - it’s the shape you get if you cut a tetrahedron along several diagonals at once (i.e. the edges are 1, 1, sqrt(2) and sqr(3). Apparently its volume is 1/6th that of a cube - if you make a total of 6 of these, 3 “right-handed” and 3 “left-handed” (i.e. the mirror images of the first three) you can put them together into a cube.  (Thanks, Scott, for the pointers!)  Very cool.

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