Thread: problem with my Naniwa 12k ss

Tried to round off the edges...I assumed corners as well..went a bit off the board..doesnt seem to have an affect on my edges though
its a bit hard to see in the pic..but if you open ms paint it shows up much better with it

I've done this with mine as well. If you soak it the stone becomes brittle on the edges. You have to be very gentle with it.

What did you use to lap it?

Dmt325 slotted side

same for me. DMT 325. It was my fault though. kind of slammed the corner into it. oops

I use a very worn out DMT to flatten mine. I have the thick, no base version. I believe it is called superstone? I do not soak it, tho. Seems to take all kinds of shapes if I do. I lightly flatten it under running water before every use and put water on it for 15 minutes before use. I chamfered mine with the same worn DMT. Awesome finisher, IMO

On all my Naniwa SS stones, I just wet them long enough for them to quit drinking which is usually about 5 minutes. I then spray a fresh coat of water on them and use them making sure to keep a little water on the surface. When done, under running water, I lap for a few seconds with either a GDLP or a DMT 325 to clean and this also flattens. I then let dry until the next time. Too much soaking is not good for these stones.

Have fun.

I agree with Lynn. Too much soaking (know some who leave their stones in water all the time) is generally not a good idea. The Norton combos do not like this and will separate from too much soaking. If the stone holds water on the surface then you are good to go. The King (very thirsty sponge below 6k requiring at least 15 mins.), Norton and Naniwa's above 6k work well with a spray bottle. I rarely soak stones above the 6K grit. Regards.

Originally Posted by Gammaray

I agree with Lynn. Too much soaking (know some who leave their stones in water all the time) is generally not a good idea. The Norton combos do not like this and will separate from too much soaking. If the stone holds water on the surface then you are good to go. The King (very thirsty sponge below 6k requiring at least 15 mins.), Norton and Naniwa's above 6k work well with a spray bottle. I rarely soak stones above the 6K grit. Regards.

Interesting. I have soaked my Nortons since owning with no ill effects, including combos. Not, of course, necessary with the finer grits, I agree. As I delved into Naniwas, I can say the opposite as well. I wonder why Norton has no 12000 to 15000?

Originally Posted by Gammaray

I agree with Lynn. Too much soaking (know some who leave their stones in water all the time) is generally not a good idea. The Norton combos do not like this and will separate from too much soaking. If the stone holds water on the surface then you are good to go. The King (very thirsty sponge below 6k requiring at least 15 mins.), Norton and Naniwa's above 6k work well with a spray bottle. I rarely soak stones above the 6K grit. Regards.

I've noticed the 8k side of my Norton does not like too much water either--it can actually waterlog & then the performance is nowhere near as good. It then actually leaves some very visible (naked eye) scratches toward the top of the bevel that it normally never leaves.