I just got one and sharpended my BM 940 on it. It gave the 940 a hair-popping sharp edge and it was easy to use. I found that it started to blunt the point so during my sharpening strokes I started stopping short of the point and then going back and used some push strokes to get the point back. It seems to have worked. The only other drawback that I see is that is doesn't create a uniform grind. Anybody have any comments or suggestions please feel free to add.