magashi：米粉ペーストを用いた可食素材の4Dプリンティング

抄録

Due to the development of 3D food printers, it has become possible to print foods in various shapes without using molds. However, this method still has issues such as low printing resolution, limited printable shapes, and long printing time. Thus, 4D fabrication methods creating flat foods that change into arbitrary 3D shapes in response to external stimulation have been gaining more attention. In this research, we propose magashi, a 4D food printing method using rice flour paste. Off-the-shelf ingredients are mixed to make the paste which is printed by an extrusion-based printer and baked in an oven to make the flat material bend into 3D shapes. With our simple method users are able to print the material in different shapes with intricate patterns to customize their food. The printing material’s ingredients, printing patterns and thickness are adjusted to control the material’s drying process, causing it to bend upwards or downwards. In this paper, we describe the shape changing mechanism, fabrication method and producible shapes of magashi, as well as its applications.