Hiroki Kaimoto¹*, Junichi Yamaoka²*, Satoshi Nakamaru¹ ², Yoshihiro Kawahara², Yasuaki Kakehi²
Keio University¹, The University of Tokyo²
*contributed equally
ExpandFab is a fabrication method for creating expanding
objects using foam materials. The printed objects change
their shape and volume, which is advantageous for reducing
the printing time and transportation costs.
For the fabrication of expanding objects, we investigated a
basic principle of the expansion rate and developed materials
by mixing a foam powder and elastic adhesive.
Furthermore, we developed a fabrication method using the
foam materials. A user can design expanded objects using
our design software and sets the expansion areas on the
surface. The software simulates and exports the 3d model
into a three-dimensional (3D) printer. The 3D printer prints
the expandable object by curing with ultraviolet light. Finally, the user heats the printed objects, and the objects expand to
maximum approximately 2.7 times of their original size.
ExpandFab allows users to prototype products that expand
and morph into various shapes, such as objects changing
from one shape to various shapes, and functional prototype
with electronic components. In this paper, we describe the
basic principle of this technique, implementation of the software
and hardware, application examples, limitations and
discussions, and future works.
Hiroki Kaimoto, Junichi Yamaoka, Satoshi Nakamaru, Yoshihiro Kawahara, and Yasuaki Kakehi. 2020. ExpandFab: Fabricating Objects Expanding and Changing Shape with Heat. In Proceedings of the Fourteenth International Conference on Tangible, Embedded, and Embodied Interaction (TEI ’20). Association for Computing Machinery, New York, NY, USA, 153–164. DOI:[ Ссылка ]
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