A Klein bottle. Warning: this Klein bottle does not open beers, it just looks cute. The Klein Bottle Opener is here on Shapeways or here on Bathsheba.com. A bigger bottle is here.
Another projection of the 4-dimensional hypercube, this one close to vertex-centered. I love the shape of its hull: almost a rhombic dodecahedron, but skewed just enough to keep the central vertices from meeting.
The more usual projection is here, other polytopes are here.
A clock frozen in time, the Time Keeper commemorates a birth date, an anniversary, or any other significant moment in your life, in history, or the future. It will keep that time with perfect accuracy, forever. You set the date and time. You can also include a short message below the date.
UPDATE: The Time Keeper has been thickened 50% to ensure printability.
Want to have this awesome Branding Iron? Download the part and make your own tag. Please keep the following in mind; make the tag not larger then a square of 2 by 2 cm, centered from the middle of 3 bars. We recommend to extrude your tag 4 mm from the bars and any reinforcement you would like to add has an extrude of only 1 mm. Or the other way around, make sure your tag stuck out more than 3mm from the rest of the surface. Don't forget to mirror your image! If you want us to make your Branding iron: http://www.shapeways.com/model/111548
Simply put a string throught the hole in the main shaft and wind it up. When your ready pull the string hard to get it spinning. Once its going it resists changes in its orientation, so try balancing it on a string or the edge of a table or even your own finger.
Spirograph texture applied to a Klein bottle.
The Klein bottle is based on a parameterized formula found on Paul Bourke's website. It was modified to provide a standing base.
http://paulbourke.net/geometry/klein/
This model has a loop at the top so that you can hang it up. The unellenu store on shapeways - for designer objects, fractal art, sculpture and jewelry. shapeways.com/shops/unellenu unellenu websiteunellenu.com