A method of forming or modifying the cutting edges of razor blades, and apparatus for carrying out the method. The method comprises subjecting a stack of razor blades (12) to ion bombardment from two ion sources (13, 14) in a vacuum chamber (10), the ion sources being located on opposite sides of a plane...http://www.google.es/patents/US5032243?utm_source=gb-gplus-sharePatente US5032243 - Method and apparatus for forming or modifying cutting edges
Method and apparatus for forming or modifying cutting edges
