Ok, first time using wet sandpaper when lapping my hones.I used 400, 800 and 1200.That is after lapping with my Dmt 325.I used it on my norton 4000/8000,my chinese somethingsomething k and my shapton 16k.
WOW! Not a single scratch in any of my hones, I can actually feel the difference with my hand.I also honed a dull razor from the 4000 to the 16k.Shaveready in no time.Much more consistensy and smoother strokes.I would say that this is pretty essential to get a super edge, at least for me.