In a very similar vein, have you seen the amazing wood machines from http://wood... | Hacker News

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GFischer on May 5, 2010 | parent | context | favorite | on: Wooden Half Adder

In a very similar vein, have you seen the amazing wood machines from http://woodgears.ca/ ?

He has a binary adder: http://woodgears.ca/marbleadd/index.html

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