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http://lifehacker.com/5356529/extend-your-razors-life-with-a-pair-of-jeans http://lifehacker.com/5356529/extend-your-razors-life-with-a... microscope before and after pictures here: http://teamdonline.com/technology/extend-life-razor-blades/ http://teamdonline.com/technology/extend-life-razor-blades/