Thread: lapping Naniwa hones

I too use the DMT D8XX and D8C. Watch the swarf build up on the Naniwa's. Some recommend lapping them submerged. I do not, I lapp them under running water.

You need to check your hones prior to lapping. I use a straight edge, place it diaganoly across the hone and hold it up to the light, If I see light through the hone and the edge, then it needs lapping. A hone must be flat before you put your blade on it.

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

Originally Posted by lumberjoe

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

IIRC you can safely lap all of your stones with the norton lapping plate from 1k up. I wouldn't lap the 220 with the norton. I would bet 125 sandpaper for that. Your best bet with that kind of investment is to go the extra mile and get the DMT D8C continuous lapping plate. Still stay away from the 220 but you don't have to worry about wear on the lapping plate for many years.