The document discusses a 4 axis CNC routing/milling machine, providing links to related content on the author's website. It includes references dated April 7, 2012, and mentions music by Keith Jarrett, specifically 'The Köln Concert'. The document appears to be a personal blog entry by José Barbosa.

1. 4 Axis CNC Routing/Milling Machine
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14. José Barbosa
http://jotabarbosa.wordpress.com
Music: Keith Jarrett, The Köln Concert
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