This puzzle consists of twenty four
sticks, each with four notches, so they snap together and lock into
position. There
are two types of stick, twelve of each, all with the same length and
diameter, but with two patterns of notches. Twelve sticks of one
kind make the edges of an inner
cube that twists slightly in one direction, while another twelve sticks
form an outer cube that twists slightly in the other direction. The
combination makes a very
solid structure, about 4.5 inches tall, which stands up nicely for
display on any corner.
Here are the 24 sticks, disassembled.
Here is a rendering of the design,
standing
still so you can see it without getting dizzy. The geometry of the
components is
described in my paper on stick puzzles, which you can find
here. You can make your own copy
of it if you have access to a rapid prototyping machine. The necessary
.stl files are available on my
Makerbot
Cupcake page.