I think everybody who has watched a television show about doctors or hospitals has heard a doctor ask for a scalpel. Every time we see them getting ready to operate on a patient they ask for one. Scalpel blades need to be very sharp and made of the finest materials. If I were about to have an operation, I certainly would not want the surgeon to use a scalpel blades that was susceptible to rust or would attract bacteria. All I know about scalpels was learned from the movies or television, but I can imagine other uses outside the medical files for scalpels.