[These pages were authored by the late Thoki Yenn,
and were restored here from the
by Erik Demaine
with contributions of missing files from various readers
(notably Tommy Stevens, Roberto Morassi, and Boaz Shuval).
If you spot any other bugs like missing images or pages,
please report them
[Matt Painter has created a
companion photo set
illustrating the folding steps of this model. —Erik]
Tommy Stevens has a miniature of this one on his Gallery
Design and Diagram Thoki Yenn
picture to the right, is of the actual precreased paper in the situation
seen in the drawing to the right at the top of the following diagram.
It is simply a repeating of the last move in the above diagram,
to teach the paper where to go when this triangle is used as an
inside lock, shown here to the right as if it is on the outside.-
it in the middle of the other 3 edges as indicated by the 3strokes
on the arrow.
all the crease in all the 4 corners has been corrected, sharp
start by pushingdown
at the point where the small arrows between the 2 A's meet.
in on the other side of the paper and hold the fold together that
forms the two triangles, as show and continue with other 3 corners.
inside and turn down the triangular lock. And complete the model.