How come Boker or Kyocera don make a straight razor?
Too dangerous! A metal razor blade has a relatively “rounded” edge (under the microscope) which prevents the blade from cutting into the skin. A ceramic razor blade, however, does not have a rounded edge and slices into the skin. Thus, a ceramic shaver would be too dangerous to use. Several engineers for Kyocera in Sendai who tested prototypes can confirm this painful fact!
