
ChromoFilament
Designing a Thermochromic Filament for Displaying Malleable StatesPresented at.
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ACM Designing Interactive Systems Conference (DIS’22), 2022
DOI︎︎︎ PAPER︎︎︎ VIDEO︎︎︎
Timeline
Jul 2021 - Feb 2022 Team Project
Donghyeon Ko, Yeeun Shin, Junbeom Shin, Jiwoo Hong, Prof. Woohun Lee (Advisor)
Deliverables
- DIS pictorial (Multisensory design)
- Novel filament implementation
- Filament-based 3D fabrication
- Color design consideration
Tools
Design workshop. User Study.3D pen. Heat gun. Thermal imager.
InDesign. Photoshop.
What if we could check malleable states at a glance?
Lack of visibility of malleable states in 3D pen crafting leads to safety issues and failed creations.
We designed a thermochromic filament, ChromoFilament, that displays the malleable states in three different colors according to the associated temperatures. This innovative material enhances creativity in thermoforming and heat-based 3D printing.
We designed a thermochromic filament, ChromoFilament, that displays the malleable states in three different colors according to the associated temperatures. This innovative material enhances creativity in thermoforming and heat-based 3D printing.
My Role
As the second author of this research, my responsibilities mainly included conducting experiments to manufacture the thermochromic filament (new material design), designing the paper layout, taking and managing photos, and actively participating in organizing and carrying out user studies.



WHAT IF WE COULD CHECK
MALLEABLE STATES AT A GLANCE?
ABSTRACT
The 3D pen has become a popular crafting tool where hands-on deformations are largely engaged. However, as malleable states are invisible, users might be burnt, or their fabrication might fail. We designed a thermochromic 3D filament, ChromoFilament, that displays the malleable states in three different colors according to the associated temperatures. From color design workshops, we identified proper stages of malleability and design considerations for color combinations, which are applied to ChromoFilament. Next, we depict a way to fabricate ChromoFilament from customizing thermochromic ink to extruding with the coated pellets. Finally, we illustrate the users’ distinctive behaviors with ChromoFilament to imply the effects of visible malleable states. We believe that our material-perspective approach, design process, and a series of findings could not only inspire supporting creativity through thermoforming but also heat-based processing in 3D printing.
Deriving Color Considerations through Design Workshop

Implementation of ChromoFilament

User Fabrication Process with ChromoFilament
