The 440 Mino Sharp Plus knife sharpener is slightly larger and more sturdy in construction than the 220 MinoSharp. The 440 is intended for heavier use. Like the 220, the 440 has two sharpening slots which are pre-set so you can get a perfect edge on your Japanese knives. The separate slots feature a coarse grit and medium grit wheel for a truly fine edge. Each wheel rotates over a small water reservoir to keep the blade clean and cool while sharpening.
Posted by matt on 5th Dec 2016
bigger than expected, its well made and easy and stable to use. not convinced you'll ever get as good an edge as a stone, but the wheels are strong and do the job on 95% of the blade. the ends only get sharpened on one side without removing the plastic guard, so remains to be seen if this will be good for the edges long term....