I got a full set of these naniwas they all work great but all have the same two problems, one isnt a big deal the other kinda is, so i could only give this 4 stars.the first problem is that none of these naniwas were perfectly flat, they were all convex (had a small hump in the middle)not a big deal, this wouldn't really cause any problems sharpening blades, i used them all like this and the blades came out great, shaving sharp. I did flatten them later though and that was really easy.the other thing is they load up easily (get clogged with metal shavings) even though the blades i was sharpening were small. This is a bigger problem because they slow down A LOT when they load up, so you may need a cleaning stone, naniwa does make a small cleaning stone for their hones but you could also use a fine diamond hone, just rub it on the surface to clean off the swarf.but at the end of the day these are really good stones they work my blades are SHARP. I got a full set of these naniwas they all work great but all have the same two problems, one isnt a big deal the other kinda is, so i could only give this 4 stars.the first problem is that none of these naniwas were perfectly flat, they were all convex (had a small hump in the middle)not a big deal, this wouldn't really cause any problems sharpening blades, i used them all like this and the blades came out great, shaving sharp. I did flatten them later though and that was really easy.the other thing is they load up easily (get clogged with metal shavings) even though the blades i was sharpening were small. This is a bigger problem because they slow down A LOT when they load up, so you may need a cleaning stone, naniwa does make a small cleaning stone for their hones but you could also use a fine diamond hone, just rub it on the surface to clean off the swarf.but at the end of the day these are really good stones they work my blades are SHARP. This is the original Super Stone.
It’s thinner, making it more affordable. One would need to sharpen a lot of knives or flatten very often to wear this out. By using a good nagura stone and cleaning after each use, and flattening only when necessary, a long life expectancy is possible.
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By being mounted to a base, it reduces the possibility of cracking due to dropping, etc. Only one (I think?) Naniwa Super Stone is coarser, the 220 grit. This stone will repair small chips and reconform edges fairly quickly. The 220 is better for more damaged knives, then move up to finer grits. This 400 cuts fast and will give a nice burr. Softer knives will do fine on it alone. Harder ones need a finer stone to finish for a nice result, such as a 1000 or finer.
A quality stone for your cutlery. This stone gives good feedback helping you know how you are progressing. A good value for your investment in fine cutlery. Creates little shavings that are clay like which helps prevent too much of the burr to form (good thing). You will need to wipe it down a bit so make sure to have a cleaning block on hand or brush. If you are a beginner like me I wouldnt use this to practice because of the fact it is hard to form a prominent burr for educational purpose.
A good stone to have, but choose something else for now till you get betterNOW the reason why I had to give it a 4 instead of a 5 is because of the board.The. They have the stone super glued to the board. Ok, I thought that must be nice. Welp the problem here is they went super cheap on the little 'slip-proof' foot/padding underneath.
If you apply too much pressure, which isn't much, the board will slide around. You will need to figure out a way to keep it down ( I was able to duct tape it down to the table) else you need to use light pressure which will take over an hour to form a small burr. I really wish they just had a separate rubber grip that comes off like everyone else did.Also mine was green but the box says s400 (can't Japanese so gonna have to take their word for it). I think it's the same product. The stone is really smooth for sharpening and is a great intermediate polishinig/sharpening stone.
The stand works really well and it doesn't seem to slide around too much even on a wet counter top. I can feel the quality as I sharpen and I doesn't seem to require much effort to use. My only reason for not giving it five stars is the thinness of the stone. In the picture the stone appears to be thicker than what I received. So this leads me to believe that the stone will not last as long as I originally was thinking. With that said, I didn't see any obvious signs of excessive stone wear that would imply this stone will not last.
I did however, purchase the naniwa chosera stones from a different site and they were much thicker and a great pleasure to work with. Shapton #220 is pretty nice as well for serious work. Quality appears very high.
Some reviews complain about adhesive being left behind when removing the sticker. The trick is not to fold the sticker over 180 degrees. This will separate the adhesive from the plastic. Once you get an edge pulled up, keep the sticker at about a 30 degree angle and pulling with the left hand, pull up and to the left.
Just the opposite with the right hand. You may still have some adhesive on the stone, but not as much. Soak the stone before trying to remove any left over adhesive. If you try to remove it dry, you will press the adhesive into the pores of the stone making it difficult to remove. Fine enough to put the final polished edge on any knife, even though they claim you need crazy fine stones like 8000 or 12000 or so. This will not take chips out of a blade, but with water can do some light cutting to put a beautiful edge on your favorite knife. It will not work without water.
The stone is very soft, and breaks down and makes a fine slurry that actually does the cutting and polishing. That's what makes this one better than many of the others. It will not scratch or damage your blade. Be sure to keep it clean, since foreign material can damage your blade.