This story on Ars Technica did something very rare, it warmed the cockles of my dark cynical heart and restored my faith in humanity by a significant increment.
The project began with a mechanical hand Owen made for a science fiction convention in 2011. He works for a school supply business during the day, but he also works from home creating special effects. When a video of Owen demonstrating the oversized hand went viral, it got the attention of Van As, who had lost most of four fingers on his right hand in a woodworking accident. Van As had been told that prosthetic fingers, such as the X-Finger, would cost him at least $10,000 per finger replaced, so he set about in his workshop trying to design his own.
The two, Ivan Owen and Richard Van As created a prosthetic hand for Liam using a 3D printer from Makerbot, at a significantly cheaper price and have now made the design files available for all to download under a Creative Commons Public Domain Dedication license.