Bruxis reacts to your presence. He knows you are there, but waits for you to leave before grinding his teeth, stopping if you return. If interrupted before completing his compusive routine, he becomes more agitated. The intention of this is to engage the viewer in an interaction not entirely under their control. Bruxis has 11 levels of annoyance, each increasing in intensity and varying in rhythm.
The original rough design was mocked up in 3D Studio Max. The interlocking mechanical components for the actual device were designed in Solidworks and Adobe Illustrator, then printed to paper for fabrication by hand.
The main outer frame is part of a found object - a denture articulator, while the rest was fabricated from aluminum and brass. The dentures and gum positive molds are plaster casts. The internal mechanisms consist of an infrared range sensor, embedded processor, servo, and battery pack.
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3D Studio Max concept renderings