We thought this was pretty cool! Just like the MakerBot, this DIY tabletop can get yo u Rapid Prototyping in no time!
Here is some info and the video from Kickstarter..
A Reprap 3D printer is a computer controlled machine that can perform a highly intricate pattern over and over again,then move up a fraction of a millimeter and draw another pattern. In this case instead of dispensing ink onto the paper, it uses a plastic extruder (think glue gun) into a flat surface until a very detailed 3D object is created. It is a critical machine in any manufacturing factory, or research and development lab. The Reprap Project (www.reprap.org) envisions that 3D printing will be found in every home in the future.
For more info check out the Kickstarter Project.