I know this ain't gonna help you bud but I do use my DM quite a lot and the other day I noticed that the edge had some slight rusting spots ( as they all do ) no biggie, but as I felt the edge with my finger I could detect a slight lip/roll running along the length of the blade, so slight you could hardly feel it. Anyway I thought I'd remove this with my steel, about six passes and it was gone and then about the same number of passes on my leather belt and I couldn't believe how sharp it was again !!! Ok so it's only barely shaving sharp but that's plenty for me with what i ask of it to do, I'm really amazed the edge holding of this steel, I have still not sharpened it with any other means !!!