Hand-cranked toothbrush

Hand-cranked toothbrush

By Phillip Torrone

Phillip Torrone

current: @adafruit - previous: MAKE, popular science, hackaday, engadget, fallon, braincraft ... howtoons, 2600...

View more articles by Phillip Torrone
2

Lrg Up Down Tooth
Seems like a good (re)MAKE – a hand cranked tooth brush from Popular Science 1944 – Link.

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By Phillip Torrone

Phillip Torrone

current: @adafruit - previous: MAKE, popular science, hackaday, engadget, fallon, braincraft ... howtoons, 2600...

View more articles by Phillip Torrone
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