ProtoSpray: Combining 3D Printing and Spraying to Create Interactive Displays with Arbitrary Shapes

Ollie Hanton, Michael Wessely, Stefanie Mueller, Mike Fraser, Anne Roudaut

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding


ProtoSpray is a fabrication method that combines 3D printing and spray coating, to create interactive displays of arbitrary shapes. Our approach makes novel use of 3D printed conductive channels to create base electrodes on 3D shapes. This is then combined with spraying active materials to produce illumination. We demonstrate the feasibility and benefits of this combined approach in 6 evaluations exploring different shaped topologies. We analyze factors such as spray orientations, surface topologies and printer resolutions, to discuss how spray nozzles can be integrated into traditional 3D printers. We present a series of ProtoSprayed objects demonstrating how our technique goes beyond existing fabrication techniques by allowing creation of displays on objects with curvatures as complex as a Mobius strip. Our work provides a platform to empower makers to use displays as a fabrication material.
Original languageEnglish
Title of host publicationCHI '20: Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems
PublisherAssociation for Computing Machinery
Number of pages13
ISBN (Electronic)9781450367080
Publication statusPublished - 30 Apr 2020


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