Hello, I am a newby, about 6 mth on ST8, I just bought this stone on Ebay : 160530178478 . I did not expect anything fancy, I lapped one side flat on Dmt 325, and Dmt 1200, to a glass finish. The stone leave some plum color slurry on both Dmt , it was pretty easy to lap, considering the concavity, about 1/2 hour. I try to refresh a razor , almost shave ready,
and after about 20 strokes, it did very easy HHT. It was a swedish razor ,
harder steel, I tryed another W&B, and it did the same. So what kind of stone is this? Is not very important to know, but it help,when you get RAD, HAD, for immunization.
Thank you very much
Livio