Etching A Blade With Hot Vinegar

In this video I am etching a blade with hot vinegar. I am etching the surface making it gray-ish as opposed to the shiny surface polished metal. I am doing this for looks, I like the dull gray look of the etched surface. I should have said I cleaned the blade with window cleaner dried off, then cleaned with acetone. My website is www.lewisrazors.com My work is sold through http://www.straightrazordesigns.com/index.php?main_page=index&cPath=96_89_93