TY  - GEN
A1  - Ion, Alexandra
A1  - Baudisch, Patrick Markus
T1  - Metamaterial Devices
N2  - In our hands-on demonstration, we show several objects, the functionality of which is defined by the objects' internal micro-structure. Such metamaterial machines can (1) be mechanisms based on their microstructures, (2) employ simple mechanical computation, or (3) change their outside to interact with their environment. They are 3D printed from one piece and we support their creating by providing interactive software tools.
KW  - Metamaterials
KW  - microstructures
KW  - fabrication
KW  - programmable matter
Y1  - 2018
SN  - 978-1-4503-5819-4
U6  - https://doi.org/10.1145/3214822.3214827
PB  - Association for Computing Machinery
CY  - New York
ER  - 
TY  - GEN
A1  - Kovacs, Robert
A1  - Ion, Alexandra
A1  - Lopes, Pedro
A1  - Oesterreich, Tim
A1  - Filter, Johannes
A1  - Otto, Philip
A1  - Arndt, Tobias
A1  - Ring, Nico
A1  - Witte, Melvin
A1  - Synytsia, Anton
A1  - Baudisch, Patrick
T1  - TrussFormer
BT  - 3D Printing Large Kinetic Structures
T2  - The 31st Annual ACM Symposium on User Interface Software and Technology
N2  - We present TrussFormer, an integrated end-to-end system that allows users to 3D print large-scale kinetic structures, i.e., structures that involve motion and deal with dynamic forces.  TrussFormer  builds  on  TrussFab,  from  which  it inherits the ability to create static large-scale truss structures from 3D printed connectors and PET bottles. TrussFormer adds movement to these structures by placing linear actuators into them: either manually, wrapped in reusable components called assets, or by demonstrating the intended movement. TrussFormer  verifies  that  the  resulting  structure  is mechanically sound and will withstand the dynamic forces resulting  from  the  motion. To  fabricate  the  design, TrussFormer generates the underlying hinge system that can be printed on standard desktop 3D printers.  We demonstrate TrussFormer  with  several  example  objects,  including  a 6-legged walking robot and a 4m-tall animatronics dinosaur with 5 degrees of freedom.
KW  - fabrication
KW  - 3D printing
KW  - variable geometry truss
KW  - large-scale mechanism
Y1  - 2019
SN  - 978-1-4503-5971-9
U6  - https://doi.org/10.1145/3290607.3311766
PB  - Association for Computing Machinery
CY  - New York
ER  - 
TY  - GEN
A1  - Roumen, Thijs
A1  - Shigeyama, Jotaro
A1  - Rudolph, Julius Cosmo Romeo
A1  - Grzelka, Felix
A1  - Baudisch, Patrick
T1  - SpringFit
BT  - Joints and mounts that fabricate on any laser cutter
T2  - User Interface Software and Technology
N2  - Joints are crucial to laser cutting as they allow making three-dimensional objects; mounts are crucial because they allow embedding technical components, such as motors. Unfortunately, mounts and joints tend to fail when trying to fabricate a model on a different laser cutter or from a different material. The reason for this lies in the way mounts and joints hold objects in place, which is by forcing them into slightly smaller openings. Such "press fit" mechanisms unfortunately are susceptible to the small changes in diameter that occur when switching to a machine that removes more or less material ("kerf"), as well as to changes in stiffness, as they occur when switching to a different material. We present a software tool called springFit that resolves this problem by replacing the problematic press fit-based mounts and joints with what we call cantilever-based mounts and joints. A cantilever spring is simply a long thin piece of material that pushes against the object to be held. Unlike press fits, cantilever springs are robust against variations in kerf and material; they can even handle very high variations, simply by using longer springs. SpringFit converts models in the form of 2D cutting plans by replacing all contained mounts, notch joints, finger joints, and t-joints. In our technical evaluation, we used springFit to convert 14 models downloaded from the web.
KW  - Laser cutting
KW  - fabrication
KW  - portability
KW  - reuse
Y1  - 2019
SN  - 978-1-4503-6816-2
U6  - https://doi.org/10.1145/3332165.3347930
SP  - 727
EP  - 738
PB  - Association for Computing Machinery
CY  - New York
ER  -