Thread: I didn't realize how important FLAT is to a hone!

+1 ... The UF becomes very versatile with different slurries.

I'll just toss in my 2 cents of knowledge here.

My understanding is that the Medium and Fine Spyderco hones are sold straight from the kiln. The Ultrafine is the only one that is surface milled after firing. Thus, the UF is the only one that has visible swirl marks on the surface.

Originally Posted by richmondesi

Personally, I'm not as big on the mathematically flat concept as others. I think honing is in the hands, and while I'm not going around recommending people don't lap their hones, I don't personally worry much about it.

Unless there is a major unevenness, I don't bother...

I agree wholeheartedly. I haven't found perfect flatness to make any difference. Technique is much more important than the flatness or even the grit rating of a stone.