In this course “introduction to product design” guided by Prof. Frank Hess, we were told to observe how we do a certain job rather than just to look at the tools we use as an isolated object. Thus this project is called “brushing teeth” and not “toothbrush”.

My problems while brushing teeth mainly come from toothbrush handles. I always felt the necessity of anti slip feature being overemphasized, and such “ergonomic” handles just look like some naughty toys. Disturbing, especially when I brush my teeth in the morning with a fuzzy head. So I decided to make some quiet ones, something like a breeze on the new snow. The first one has a gentle twist (not so obvious on picture), the second one has a shoulder for the thumb (gives haptic reassurement). A firm grip offers the grainy hard plastic / ceramic surface. The length and diameters in different sections are set upon test results of different toothbrushes I bought. (Jul 2005)

Wall decor for a chill-out room on our first term party. When viewed on the couch (marked below with “+”) where people rest and play video games, the perspective would meet that of the environment and this picture would look like an 1:1 mirrored room of the real one. So it “doubles” the small chill out room in size, adds a flair of early 3d games and perhaps also parallel universe. I measured the room and made this image with Freehand MX using projection method (shown below). Actual size is 5.56m * 2.41m. (May 2005)

A corkscrew for the workshop freshman course. As a more natural hold to me and some of my friends, the helix sits between index finger and middle finger, the handle makes no use of small finger and the thumb rests on its short end. The bottom of the handle is made concave so that pressure is evenly spread. (Apr 2005)

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