with a few limitations. So for my standard knife up to the WMF Professional Sharpener is absolutely useful and with a few strokes you have a razor-sharp blade. Even stripping works flawlessly. Compared to the whetstone of removal, however, is quite high, especially when applying too much pressure. But for my two Damascus I will stay completely in stone, since it can be sharpened considerably gentler material yet. Something I have been working with all the knives with the whetstone to, but this is more laborious task than necessity. I think that this sharpener for those who have no practice with the whetstone or sharpening steel is a perfect instrument, but also for those like me that although the knife in his heart, but not handled as a sanctuary. That one thus destroys the knife I think is bare nonsense if used sensibly and wisely. From my side for every a clear recommendation, seeking an easy way to make his knife sharp and to keep sharp.