Watchmakers watch-out! Check out the latest on this article about metal sintering fusing gold particles to achieve a working watch. Amazing detail.
Hoptroff Ltd. of London, is going for the real 18 karat deal by 3D printing their watch cases from actual gold.
http://3dprintingindustry.com/2013/09/03/the-first-commercial-watch-made-from-3d-printed-gold/