<story><title>Triple Gear</title><url>http://www.shapeways.com/model/779258/triple-gear.html</url><text></text></story><parent_chain></parent_chain><comment><author>frankus</author><text>Seems like it could have applications for something like a rope climbing device, since all of the internal edges converge (or diverge) as the parts are rotated.</text></comment>
<story><title>Triple Gear</title><url>http://www.shapeways.com/model/779258/triple-gear.html</url><text></text></story><parent_chain></parent_chain><comment><author>xijuan</author><text>That looks like a piece of artwork!</text></comment>