Above:The Tetrahedral Twins
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A stella octangula-shaped puzzle that is like a Master Pyraminx with an additional turning tip added to each face.
This puzzle in the shape of a stella octangula can be thought of as a compound of two Master Pyraminxes. Tom van der Zanden got the idea from this puzzle from patent US4836549 but designed the mechanism independently. The stickers on this puzzle are recessed to stop them being rubbed of as the puzzle is turned.
The puzzle is being sold on Shapeways as a DIY kit, finished copies are for sale from the inventor.
If you're looking to buy, eBay is the one place you can find almost anything... if you're willing to wait for it, then pay the price!
Thank you to the following people for their assistance in helping collect the information on this page: Tom van der Zanden. If you have any information or images that you would like to contribute to this entry, please click the apropriate add () or edit () icon above, or use the following links to modify this item, add a recent sale price or to add a new link.