About this 3D model

Ikea has started making those little cams you use to assemble their Billy bookshelves out of plastic. So guess what happened when a friend was assembling theirs? One of them snapped, and Ikea didn't include any spares. 3D Printer to the rescue! (It's becoming a habit with Ikea parts now: http://www.youtube.com/watch?v=Yv98JTozZQQ)