I have just got in a new mess of stones including the Naniwa 12000 grit superstone. I also got some Norton combos, 220/1000, 4000/8000, and a Norton lapping stone. I lapped everything with the lapping stone, but was worried that the Norton lapping stone may be too harsh for my 12000 Naniwa, or my Norton 8000. One member told me to lapp my 220 with the lapping stone, and then use the 220 to lap the 1000, and then use the 1000 to lapp everything else up to 12000. This sounds pretty good, but I sure would like to lapp everything with the Norton lapping stone, it would be alot easier. I am not sure it is safe though. I don't want to ruin my good stones.

Any advice?

Thanks