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Geared Heart, Hand Crank Edition
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Greg Zumwalt
21,974
Nautilus Gears
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Misha Tikh
21,463
Screw
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Kirby Downey
17,574
Spinning Balancing Bird
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Mark Ledwold
16,361
Saturn V Rocket
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NASA
22,126
Support free strong Bolt
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Jack Imakr
31,610
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Animated Heart Valentine.
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Greg Zumwalt
5,571
Combustion Engine
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Jack Imakr
48,696
Geared Heart Version 2
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Greg Zumwalt
4,514
Perseverance, Motorized
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Greg Zumwalt
18,921
Mechanical Gyroscope
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Wilson Nickel
13,913
Impossible Bearings
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MyMiniFactory
33,711
Hubble Space Telescope
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NASA
7,521
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Curiosity Rover
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NASA
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