3D printing technology produces smooth, detailed architectural models in an array of materials, including rigid photopolymers and plastic. Students from University of Tokyo guided by architect Kengo Kuma have developed a 3D-printing pen that can be used to create complex architectural structures out of plastic sticks. The Construction team named their model as ""large-scale hand-drawn structures"" which manually prints out strings of thermoplastic filament, guided by a digital tracking system. The support structures are made up of acrylic bonds providing structural stability in tension and also some strength in compression. To know more, please read the article by Dezeen Magazine -: http://www.dezeen.com/2016/02/22/tokyo-university-research-students-3d-printed-pen-complex-architectural-structures-plastic/