So imagine designing your own dream house, what would you say if a builder came to you and said he could deliver you a 2500 sq foot house in 24 hours? What if your friendly builder said he could skip past the weeks and months of waiting for materials to be delivered and trying to steal moments of construction in between spurts of bad weather? What if he said he could printout your house?   Well the researchers at California university reckon you’ll be pretty interested in that prospect. So much so that they have developed a new layered technology 3d printer called contour crafting. Up to now, 3d printers use thermal plastics that harden but this uses concrete in layers to construct straight or curved walls, even domes. The man behind this idea, Mr Koshenevis, said that everything is being made by computers and machines but not buildings and he wants to bring that technology to urban construction. The advanced process is actually quite simple: a computer program guides a giant robot with a …