Ha i have two ceramic plates , cut from a theracot ceramic floor cover . They are lapped and they take steel agresively - the swart darkens in a few strokes - i have set 2 bevels theese days with them . they leave very fine consistant scratch patern , like a 1000 grit stone , exept they are faster . They work magnificent on my knives and with 2 rasors , the question was to find a fine ceramic finisher ha ha ah