I'm building a new 3D printer. It's a Prusa steel with a 20x30 cm heated print bed. The reason that I build a new one is that I want to be able to print larger parts, print with other filaments like ABS, Nylon and soft filaments like filaflex. at some stage I will upgrade so that I can printwith two colors, or two different materials. The parts in this video are the frame: http://www.ebay.com/itm/131925664995?_trksid=p2060353.m2749.l2649&var=431266746539&ssPageName=STRK%3AMEBIDX%3AIT
The laser cut steep parts: http://www.ebay.com/itm/131925664995?_trksid=p2060353.m2749.l2649&var=431266746539&ssPageName=STRK%3AMEBIDX%3AIT
Motors: http://www.ebay.com/itm/112104997856?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
More about the printer frame here:
http://reprap.org/wiki/P3Steel