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Ajai Raj
Get latest from Ajai Raj
This Voice-Activated Organizing Robot Makes Sure You'll Never Lose A Screw
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2 DIY Printers That Would've Impressed Gutenberg
By Ajai Raj / Published May 9, 2013
Build Your Own Resistor Substitution Decade Box
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The 49-Year History Of One Of Science's Most Storied Subs
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