This is awesome! It's a shame this didn't get more votes or more comments when originally posted. (Sometimes I wonder if HN just isn't the right place for 3d / maker stuff.)
This is a new site I've created for sharing models for 3D printing. What I thought would be interesting to HN readers is another example of software converted to Javascript with Emscripten. Also, if you try it out in Firefox 23 you'll see quite how much a difference asm.js can make.