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Semi-Formal Pocket Gear Train
Magnetic gears for your shirt pocket.Jewelry
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Permit me to present a stylish way to introduce the concept of gear ratios. For every turn the big gear takes, the little one turns twice.
These gears are designed so that one can snap-fit a single .25" neodymium magnet into their centers. They also permit the wearer to casually throw around the word "neodymium" at parties.
If, as I am, you are a belt-and-suspenders sort of hominin, you might affix the magnets in place permanently with a dab of super glue to prevent the accidental necrotizing of the intestines of pets and small children.
A second magnet on the opposite side of one's vestments will hold the gears in place.
I recommend using these magnets:http://amzn.to/1oWX7OJ and the Space Age adhesive of your choice.
Will not damage clothing and may actually enhance self-esteem.
Also available on Shapeways: https://www.shapeways.com/model/1454599/semi-formal-pocket-gear-train.html should you want something a little fancier than plastic.
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