Quote Originally Posted by saladbar2000 View Post
Thanx for all the info everybody. I did buy the flattening stone as well. How often should I use the flattening stone and is it necessary to use it on both sides? It was mentioned the 4k side doesn't erode as quickly
The 8K side is very stable but not the 4k side. If all your doing is razors, the 4k side will not wear that much. If you put a chef knife to it that will change.

Anyone else have the white 4k norton?

As far as how often to flatten. that would depend on a few factors, like how much you use the stone, how hard you press the blade, and stroke repetition. Yes you should flatten both sides at the same time, that way you know they are both flat if one side is flat.

One of my cleavers is RC63, and it grinds deeply into the 4k to a point that I don't even touch that knife to it any longer.