MinoSharp Ceramic water-based knife sharpener | Global 550/GB Three-phase ceramic sharpener, recommended for all types of knives, except those with single-sided cuts, e.g. traditional Japanese knives. Thanks to water, the sharpening process is faster, and the factory-set holes make it easier to sharpen the knife at the right angle. Since the groove into which the knife is inserted is not parallel to the ceramic wheel, its convex angle allows the knife to be sharpened to its original sharpness. The rubberized handle and base have anti-slip properties. Technical data: Blue circle - coarse grain Brown circle - medium grain Yellow circle - fine grain Length - 23 cm Handle length - 11 cm Height - 6.5 cm Width - 5 cm Usage instructions 1. Pour water into the chamber with wheels and do not pour it out until the end of sharpening. Water moisturizes ceramic sharpeners and prevents the blade from overheating. 2. Hold the handle firmly so that the sharpener does not change position. 3. With your other hand, hold the knife and hold the spine of the blade with your index finger. Insert the knife vertically into the groove with the blue circle (coarse grain). Move the blade back and forth by pressing gently: 7-8 times or as many times as needed. You should not press too hard on the knife while moving its edge in the sharpener. Excessive pressure may damage the wheels 4. Insert the knife vertically into the groove with the brown circle (medium grain). Move the blade back and forth by pressing gently: 7-8 times or as many times as needed. 5. Insert the knife vertically into the groove with the yellow circle (fine grain). Move the blade back and forth by pressing gently: 7-8 times. 6. After finishing the operation, wash the knife by hand in hot water and wipe it dry with a towel or cloth. Remove the cover and rinse the sharpener in clean water. The question of how many times you should move the sharpened edge depends on the type and condition of the knife. In the case of Global knives, it is recommended to use 7-8 times in each circle. Other brands of knives can be moved 15 times in each circle, and if the knife is not sharp enough, repeat the operation 15 times. MinoSharp sharpeners have been tested and approved by the CATRA research institute, a leading authority in sharpening techniques based in Sheffield, UK.