A Sierpinski tetrahedron, the 3D version of the Sierpinski triangle, stage 5 I think. There are 4096 of the smallest triangles and 1024 of the smallest tetrahedrons. The model has 499994 faces.

Update:
The edges are now almost 18 cm (7 in) long and it stands about 14.5 cm (5.7 in) high.

The model has been updated because the smallest struts were a bit too small to be printed. So it's now 1.5 times bigger in all directions.

The pictures are of the previous smaller version, the new version has been ordered successfully a number of times in WSF.

I created the model using POVray and MeshLab.

Roll a Ball on Plastic Rails Inside a 3D Cube. Reach the Exit to Solve the Maze Puzzle. Rolling Ball Maze Puzzle & Brain Game for Kids, teens & Adults.

New 3D Rolling Ball Maze Puzzle. Roll the ball inside a Plastic 3D maze cube to the exit to solve the puzzle. New 2011 brain toy game. A Work of Art.

Color and material options are in the "Select Material" drop-down list on the right. If you want an option not shown or would like a quantity discount, please click on the "Contact Designer" button to write me an email.This pack includes the mazes listed below. Each maze includes it’s own ball.

Escher’s Playground - Reminiscent of the upside-down staircase paintings by Escher, this 7x7x7 maze will soon have you forgetting which way is up and down. The dimensions of this maze are 40mm by 40mm by 40mm and the ball is 9mm in diameter.

Floating Labyrinth - The ball appears to float through an intricately connected matrix. What appears to be open paths are mysteriously blocked in this 6x6x6 maze. The dimensions of this maze are 31mm by 31mm by 31mm and the ball is 8mm in diameter.

Zig Zag Zog - You will learn to zig zag in three dimensions to solve this 5x5x5 maze, but watch out for the pitfalls! The dimensions of this maze are 24mm by 24mm by 24mm and the ball is 7mm in diameter.

Start by pushing the ball into the spring loaded entrance ( it looks like a backwards “J”). Tip the maze in different directions to roll the ball along the paths through the maze. Don’t worry, if you make a wrong turn, the ball will not fall out of the maze. If the ball runs into a dead-end you can just roll the ball back the opposite way and try another path, that’s all part of this fun brain game. When you reach the exit there is a spring loaded button to press to release the ball from the maze. The exit is in a corner of the 3D maze, where you will find a bar with the little button sticking out from the side of the maze.

Each maze game come with the ball attached by a little chain link cage for shipping. This needs to be cut off and cut open with scissors and the ball will fall out. Note that each larger size maze comes with a larger ball. The balls can quickly and easily be colored with a highlighter or marker. Let the ball dry for a minute after applying then roll between clean white paper to remove excess color so it does not rub off on the maze. Paint for plastic models can also be used. The orange, green and black balls in the pictures were colored with highlighters or markers. Coloring the ball makes it easier to track in the Labyrinth maze.

See for yourself how Ethereal Maze Puzzles take maze puzzles to a whole new level of challenge and fun. With their convoluted lattice structure they can also be enjoyed as captivating and intriguing sculptural works of art.

For updates, news and reviews please visit the Ethereal Maze Puzzles YouTube channel and Facebook Fan Page

Show off these unique Works of Art in a quality display case. The medium size case is about $3 and is perfect for "Escher’s Playground". You can see a picture of the display case with a maze inside in the photos above. Use the link below to get your Display Case with Free Shipping.

Medium Size BCW Maze Puzzle Display Case

If you are in the UK you can get a similar one for about GBP 5.30 with Free Shipping with the link below:

Display Case for Bare Bones for UK Customers

It arrived in WSF, and it works for real :-)
Gear system based on hypotrochoid shapes.
It is printed as a 9 piece puzzle, a VERY frustrating one at that ;-)

Depending on the print batch, it might need some minor sanding to make it run properly.

Steel available on request, still untested by me.
I think steel will work but probably needs some more sanding to make it fit.
With the new pricing scheme, the steel version is no longer available.
If you want one in steel, please send me a message and we will find a way.

The BBC feature The Code, which aired in the summer and fall of 2011, culminated in a treasure hunt. This is the treasure. The original was made in bronze-finish steel and silver; this recoloured model shows the structure. It is a rendering of the five Platonic solids, nested.
An uncoloured version is here.

3D fractal sculpture / L.E.D candleshade: 'Pointy Shells'. The L.E.D Candle (light source) itself is not included. Shapeways 3D prints this small lightshade designed for an L.E.D candle. Please don't use with real candles. If you would like an L.E.D candle shipped separately from unellenu please contact unellenu(at)unellenu.com (& advise your Shapeways order number for the unellenu candleshade).

For the first time since before technology was invented, this sculpture is available. I've always liked it, so I'm happy to see it again!

Math and Love combine to form a graceful infinite loop of radiating love hearts.

Love, to me, is the art of becoming one, be it with a lover or the universe. This piece is my way of expressing that concept of 'oneness' right down to the gentle 'kiss' in the centre.

I've tried to capture the feminine spirit with this piece and the women that I have shown it to so far have all loved it... Take it for a spin in the 3d viewer...

A unique valentines gift for your unique valentine

This is a model of 30 Identical pieces combined to make 1 solid piece

The Dino Skewb is a combination of two famous puzzles, the Dino Cube and the Skewb. The Dino Skewb's mechanism is based on my Tetrahedral Twins (also available from my shop).

This is, to my knowledge, the first ever Dino Skewb. It looks exactly like a Lattice Cube (Master Dino), but it is quite different. A Lattice Cube turns like a Dino Cube with turning tips.
My Dino Skewb does not have those turning tips but, contrary to the Lattice Cube, it does have the deep cut of a Skewb. The turning on the Skewb cuts is great, the Dino cuts have a little click to them because I needed the pieces to overlap a little to prevent gaps from appearing. I choose aesthetics over functionality in this case. But it isn't bad at all. The puzzle can be a little squishy at times, but overall I'm very pleased with the result. 

This item is for a DIY kit only - it only contains the plastic 3D printed pieces, you will need to supply your own M3 springs/screws to assemble this puzzle and also supply your own stickers (available from Dr. Sticker). Alternatively, you can order fully assembled and stickered puzzles from me at tom@tomvanderzanden.nl.