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The potential of large-scale freeform construction is to build a full-scale house in a day at a fraction of today's cost. The current reality of mega layered manufacturing is it delivers more modest benefits: the ability to build designs that are difficult or impossible to construct (think Frank Gehry) using conventional techniques. In this way, large-scale freeform fabrication mimics its smaller, older cousin of rapid prototyping and rapid manufacturing, except the technology is not as mature. One of the more exciting players in the mega 3D printing industry is Enrico Dini. The Italian engineer's d_shape (formerly Monolite) technology combines sand and an inorganic binder to produce what he says is a marble-like material with a resistance and traction superior to Portland cement.