Originally Posted by
jkatzman
I purchase a Shobudani Karasu marked 5 in hardness and cutting. It produces a slurry quickly using a Nagura that came with the Shobudani, but I wasn't able to get a good edge. I put it up for sale and couldn't sell it. I decided to experiment and by making a very heavy slurry on the first laps using circular motions then x laps. Then dilute it to medium slurry using circular and x laps then lapping using x strokes under running water the edge wasn't as sticky as with my Naniwa stones. I then did 10 laps on my Mastro Livi chromium oxide then 30 laps on the skin and the edge was really sharp and the shave the smoothest I've had. I've been using the same lapping technique Mastro Livi does and it really seems to work. Trial and error and not giving up. What a great hobby.