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- Official Rube Goldberg Web Site - Information about Rube Goldberg, his drawings, his machines, and contests.
 | - Marble Machines
- Amusing to watch artistic contraptions.
http://www.sentex.net/~mwandel/marbles/index.html
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 | - Rube Goldberg Machine
- This Rube Goldberg Machine by Jacob Shwirtz turns on a blue-light thereby revealing a hidden message in 47 steps.
http://www.jacobshwirtz.com/RubeGoldberg/index.html
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