Csg.js: Constructive Solid Geometry, with rotatable 3D models 
Submitted this yesterday but no one cared. <a href="http://badassjs.com/post/13788484076/csg-js-constructive-solid-geometry-3d-modeling-in" rel="nofollow">http://badassjs.com/post/13788484076/csg-js-constructive-sol...</a>