Quote Originally Posted by DaveW View Post
I'd rather use a diamond nagura. If your dressing stone is brick red, it's either 400 or 600 grit, and it does clean the surface of the stone off, but a diamond hone will do that without leaving any particles behind.

If you use the naniwa dressing stone, rinse off the surface of your stone before you finish a razor on it.

Those red brick style dressing stones are superb for taking rust off of knives and tools (supposing you soak them), though, because they're aggressive and they're a handy size for that kind of thing.
Thnx, then Ill try lapping with sandpaper for now. Good to know I can use it to remove rust though