http://www.stephenhobley.com/blog/2009/12/28/cutting-a-cog/ Laser Harps, Tesla Coils, and Killer Space Robots Wed, 08 Feb 2012 21:09:24 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://www.stephenhobley.com/blog/2009/12/28/cutting-a-cog/comment-page-1/#comment-12316 Stephen Hobley Thu, 12 May 2011 01:47:34 +0000 http://www.stephenhobley.com/blog/?p=1076#comment-12316 About 6" diameter. About 6″ diameter.

]]> http://www.stephenhobley.com/blog/2009/12/28/cutting-a-cog/comment-page-1/#comment-12313 EK Thu, 12 May 2011 00:15:32 +0000 http://www.stephenhobley.com/blog/?p=1076#comment-12313 What is the size of this cog to put it in perspective. What is the size of this cog to put it in perspective.

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