So I received my cretan today and I went straight to dry 50 grit sandpaper to flatten it. Well guess what, this @@@@ rock won't lapp.....
I spent almost 2 hours on good quality 50 and 80 grit sandpaper and it removed the pencil lines but I am sure that the stone is not perfectly flat. Also let's not talk about slurry bevause there is none, either with a dmt 600 card or its matching slurry stone.
I am getting really frustrated and want to throw the stone out of my window....
Might this be a finisher variety of the cretan?
Here is a photo of the hone (dry).
Attachment 292786