Thread: Lapping A New Norton 4k/8k

Originally Posted by Hirlau

1/8 of an inch ??
Sounds like a bit much to lap off of a new Norton, but I could be wrong.

It took me about 10 minutes of easy lapping with a 325 to bring mine into play.

I didn't exactly measure it and maybe exaggerated some. The point being, it seemed that I lapped away a lot more than I thought would ever be necessary with a brand new stone. I bought a Naniwai 1k at the same time and couldn't figure out why the 4k felt so much more rough than the 1k. I hadn't smoothed it out yet. My honing mentor here, Stefan, told me to get busy with the DMT and not to be afraid to strip some of the 4k off. Then things started to make sense.