I received the 3D print of the
one-sided die that I designed. Unfortunately it sometimes gets stuck upside-down on the unstable equilibrium. I have designed a new version which I think should fix the problem:
http://www.shapeways.com/model/979729/monostatic-body.html. This version has a ridge on top which should make the unstable equilibrium... less stable:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5XXRtJvIhu2cAXL0Vp7-xdhANtUTLi8ORasEEXU3bGLbaU-n0yawXrmmGrLCn5orMernp_8Vtc5amU8XmV7tymLM8g-6_OLfxW7EETBY2Bqi7nwWgSmAdU6pmLq7KT6saaArd/s320/screenshot2.png)
The ridge causes the center of mass to raise a bit (to 0.9mm below the cylinder's center). I feel confident that this version of the shape should work - it will take about two weeks until I get the printed copy from Shapeways.
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