If you've been following my blog for a while you've no doubt picked up on my interest in 3D printing and the open source fabber called the RepRap. It seems that I'm not the only person who's been keeping a sharp eye on this particular technology. The Gada Prize (formerly the Kartik M. Gada Humanitarian Innovation Prize in Personal Manufacturing) has been announced to advance the state of the art in 3D printing and personal manufacture by putting up $20kus to the person or team whose project meets certain criteria by 31 December 2012. The prize appears to be aimed …