Mr r Hyndford - 'A waste of money' You sir, do not know what you are talking about!
I have around 6 global knives of varying types and also use MinoSharp wet stones
1/Medium 1000 grit, and
2/Super 6000 grit
to sharpen them, afterwards I strop with a leather belt, to further polish the edges.
They are then sharp!
Today I went and picked up a GLOBAL G2 Cooks Knife 20cm and a G-48 Santoku fluted knife 18cm in Cardiff, and also a MinoSharp Plus Sharpener 'to try out'.
After bringing them home, I found by comparing the new knives to my older others, they did have the edge on my other sharpened knives, not much but 'the edge' nonetheless;
I ran my knifes only through the fine (yellow) part of the sharpener as these where already there more or less.
WOW!
I managed in 20 or so stokes to restore my 5-6 year old knifes to factory standard! They are again scarily sharp which I love. Why didn't I do this all along!
Sorry to sound 'cheezy' but this sharpener puts the 'edge' back on your knive/s.
I can tell you that I have tried a Chef's Choice diamond hone, Electric power stone Sharpener & Wetstones (Which are also amazing) and I would send all back except my wetstones and minosharp plus.
The minosharp plus is easier to use than Wetstones and cleaner, but there is something I find satisfying about 'manually' using Wetstones to sharpen a blade, relaxing almost?
From the off if you use the yellow before and after, 10 strokes max, your knife will always stay like razors. I will be from know on, only using to polish up my blades on Wetstones maybe every six months, hell I may be able to go once a year.
I will update on how they recover a blunt blade as soon as I have a chance to try. I may be some time.
I Totally recommend this item to anyone with a Global or other fine bladed Japanese knives.
Don't be put off by insane reviewers...
****UPDATE****
I have had a change to use all three wheels on the mino sharp plus to restore a blunt edge, suspicions confirmed it's amazing! 10 strokes on each wheel in one direction not back and forth, and they are razor again...