Giant Spirograph

I built an eight foot diameter version of the classic Spirograph drawing tool that uses chalk to make street and sidewalk art. More info at www.hahabird.com/?p=1704

[@tarmach523]

How cool!! I would love to see this in action on a large piece of paper with tons of different colors, or a monochromatic of blues or reds...I've always been fascinated with the Spirograph, great job!

[@deidreross2126]

This is clever! Have you thought about marketing how to make one of these?
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