No, we don't sharpen or polish katana. In Japan, katana are sharpened by katana sharpeners who spend years to master the art. They spend days and weeks to sharpen and polish one katana in the way they are supposed to be done. They are a different trade, so they don't sharpen other blades like kitchen knives that we do. We can technically sharpen them probably, but would like to respect their art and effort to continue their tradition. We don't sharpen weapons. We will not sharpen any blades that are designed or intended to be used as a weapon. We only sharpen blades that are used for a lawful purpose.