The feasibility of the concept has been prototypically demonstrated. New slicing strategies for this printing process have been developed to slice the parts for the novel printing process. With this cone-shaped layers, the printable angles increases by 45°, which leads to printable overhangs of up to approximately 100°. The printing cone increases in diameter from layer to layer. The printhead no longer follows layers parallel to the build platform, but moves on the surface of a 45deg cone. With conventional FDM printing, overhangs of more than 45deg–60deg must be supported.įor this novel printing process, the printhead is rotated 45° around a horizontal axis and equipped with a vertical, rotational axis. a novel 4-axis FDM printing process with a newly designed printhead, for the printing of overhangs without support structures. Introduction RotBot by ZHAW School of Engineering Zurich RotBot by ZHAW School of Engineering Zurich (3), rotating tilted nozzleĪs featured on Hackaday Januand other sites, a “ Novel 4-Axis 3D Printing Process to Print Overhangs Without Support Material ” by ZHAW School of Engineering (Zurich, Switzerland), from the abstract of the paper: Ashtar K with Rotating Tilted Nozzle (RTN).Slicing for Rotating Tilted Nozzle: Conic Slicing.RotBot by ZHAW School of Engineering Zurich.
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