Sad prediction: the future of 3D printing will be cheap printers [that require/are subsidized by] proprietary resins.
Instructions and Pictures: http://www.thingiverse.com/thing:30642
Video: http://www.youtube.com/watch?v=JebhbxgjBgA
Pellets, 3$ a pound on eBay: http://www.ebay.com/sch/i.html?_trksid=p3984.m570.l1313&...
and to be sold commercially by LulzBot.
Plastic, not resin based, but people are still looking into doing cool stuff to solve the challenge you mention.