Does Obsidian Really Form the Sharpest Edge?
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15:08
Watchmaking: Machining a Watch Gear
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27:41
Building a Bimetallic Tea Monitoring Mechanism
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8:22
How-to Design Print in Place Hinges | Design for Mass Production 3D Printing
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13:07
Cut anything, even diamond
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18:07
Honey, I Shrunk the Steam Engine
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11:36
Something weird happens when you keep squeezing
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23:40
50,000,000x Magnification
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11:32