The stl files for these models are
here:
compound of three cubes,
stellated rhombic
dodecahedron. A cool thing about the stellated
rhombic dodecahedron is that it is a space-packing shape.
If you make enough copies, you can fill all space without any
gaps or overlaps---just like with bricks, but this shape is more
surprising. Here you can see a bit of the packing:
Here's another cool thing, a puzzle made of four interlinked
triangles. It is quite tricky to put together.
The stl file for six sticks is
here. You have to build
it twice to get all twelve pieces.
It was supposed to look
like the image above, but the tiny details at the edges
are hard to reproduce.
Here's the stl
file. I made the bottom flat so no support structure is
needed.
This is an awesome folding
dodecahedron and its complement. Together they form a
cube. Each is made of eight parts hinged together with
white adhesive tape. To get a sense of it, see the
video
Inside-Out
Logic on
my
YouTube channel. The stl files are
here and
here. You
need to make four copies of each file and also four
copies of the mirror image of each file. From the
video, you can figure out how they get assembled.
(more to come as I get time...)