I have a friend who is a very old retired barber. His father and grand father were barbers before him. He told me that he always had a 7 day set of razors. The reason was that they were all the same and he knew how they shaved. The razor was an extension of his hand so to speek. If one needed to be honed he would just grab the next. He said he would use the same one every day until it needed extra attention. This save him alot of time, until he could go home and hone the three or four razors that required to be sharpened. His father did mostly shaves, One saturday he did over three dozen shaves using only two razors. Dice Stone