The technology is relatively simple, and was designed by the Italian based company, WASP (World's Advanced Saving Project), and one of its main attributes is it can be assembled in two hours.
The printer has three arms with a six-meter reach in height. So it can build houses to a much greater height than is usually the case with a mud hut. Another difference is the method of construction, which makes the dwelling much stronger. Instead of using large square blocks, small triangles are used, allowing the house to bear a much greater load.
Another advantage is these shapes dry much faster, making the house inhabitable quicker, while no materials need to be imported: everything required to build a mud house can be found in the build's vicinity.
The Italian company exhibited at a science fair in Rome earlier in the month. Time and space constraints meant they were unable to create a three meter house there. But they put their technology to the test, creating a palm sized model, according to Make Magazine.

WASP are the second largest 3D printing organization in Italy and are using the money they earn from the commercial sale of their printers to fund this project. They hope to construct their first full size house in early 2015.
I think this is a great idea just so long as the inventor or designer or original fabricator becomes a billionaire, several times over.
Otherwise, it's just giving away too much to the measly and lazy and over-populated poor (needy?!?) instead of forcing them to work for their crummy lives and to get properly prioritized meal tickets from the hardworking, innovative and super-intelligent rich, as they should.
Dumbfucks!
signed,
Mark Zuckerberg