Don't let youtube suck you in either, there is endless amounts of machining porn available and you'll be there for hours.
[ http://www.youtube.com/watch?v=UFzxgSD4DRE ][ http://www.youtube.com/watch?v=QsmiIeAkE-o ][ http://www.youtube.com/watch?v=ytFQMEeq3Bk ][ http://www.reddit.com/r/engineeringporn ]
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