Global knives come out of the factory in Japan with a very sharp edge and CROMOVA 18, Globals unique blade material, ensures that this sharpness will be maintained longer than most other knives. However, Global knives need to be sharpened from time to time to maintain their keen edge. As a general rule, the best sharpening tool for an individual is one that he or she is going to use. Each tool is different and may be easy or difficult to use depending on the individual and their level of experience or skill.
Global recommends periodically sharpening your knives using a MinoSharp waterstone. In between stone sharpenings, it is recommended that you use the Global fine ceramic or diamond rod to keep the edges of your knives aligned. (Global serrated knives do not need to be sharpened)
There are various types of waterstones stones available and normally a medium grit stone is sufficient to start with. However, if the blade is blunt or damaged, it may be necessary to start with rough grit. A waterstone must be placed in water and allowed to soak for 10-15 minutes to allow it to absorb sufficient moisture.