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Optimized objects from a 3D printer

  Photo: Vienna University of Technology © Photo: Vienna University of Technology

Przemyslaw Musialski and his team from the Institute for Computer Graphics and Algorithms at the Vienna University of Technology have developed a mathematical optimization enabling the features of the object to be printed to be simply adjusted on the computer. The scientists demonstrated the process with plastic fish swimming below the surface of the water or half of which were below the surface. The decisive factor is the precisely chosen form and size of the hollow spaces inside the fish. In this way the rotation axis can be precisely adjusted in order to use it as a spinning top.

The researchers also designed a tilted bottle which tips over when filled with water, but stays in place when filled with alcohol. In this case the wall thickness of the bottle had to be exactly adjusted to the difference in thickness of the two liquids.

The method allows for specifying data for the external shape of the object and other information such as the rotation axis and the floating alignment. "The software not only provides the data for the external shape but also the shape of the hollow space inside the object so that it achieves the desired properties”, says Musialski. The process was presented last fall at “PixelVienna“, the conference for computer graphics and animation, and won the "Austrian Computer Graphics Award" in the category "Best Technical Solution."

Service: Demonstration video: https://youtu.be/L6o8w1BDajg

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