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Bam has developed a “robo printer” for the construction of free-form buildings. The machine, dubbed the 3D Builder by the Dutch construction firm, uses free-form print technology linked to automotive industry robotics. Bam says it is the first of its kind. The robo printer can be used to create free-form buildings – as opposed to those constructed with conventional framing methods such as reinforced concrete, steel or timber – and complex ornamental exteriors, according to Bam. “The construction method is comparable to that of an inkjet printer, but instead of putting ink on paper, it uses a bonding liquid (water with magnesium chloride) with sand and magnesium oxide to build the structure from ground level upwards,” Rutger Sypkens, commercial manager at Bam, explained to CM.