NaniwaDiamond Whetstone Grit #600 DR-7506

This is perhaps my favorite of the 3 Naiwa diamond-in-resin stones I have. It cuts quickly, and can roll a consistent burr back and forth across an edge.(The 400 grit is great. Fast cutting on the verge of being a little harsh - but awesome, and weirdly still quite smooth. - The 3000 grit stone in this line is soft, milk-smooth & very effective.)I am comparing these stones to the older 'Pro' Naniwa ceramic water stones in 600, 1200 & 3000 grit. I like sharpening on the splash & go stones, but the resin stones are objectively faster, and I think many people would prefer them, if they didn't mind the price.

This stone is "feels" and sounds very different, in a good way. You don't feel the grit of the diamonds like my other stones, yet cuts even better with a finer scratch pattern. Doesn't make any sense, but you can see it in the results. It doesn't "feel" like the stone is doing anything, rather it feels almost smooth, especially for a 1000 grit. Yet when you look at the chisel or plane blade it is obvious that the cut is happening, and with a finer scratch pattern than my other two stones. Apparently, the resin bonding allows fresh diamonds to become available as the stone wears. Is it expensive, yes, but I feel that it will also last longer, and cut more consistently over a period of time. I plan on purchasing the other two diamond stones that Naniwa has to offer. If this one ever wears out, I'd buy another.

I sharpen knives everyday. it’s not my profession but I sharpen for myself, friends and family. This is the stone I use before moving to a finishing stone. If you don’t want or need a polished edge this stone would be great as the last stone in your sharpening progression. This stone cuts fast and leaves a beautifully consistent scratch pattern. You wouldn’t think it cuts as fast as it does by rubbing your fingers across it. The diamond resin coating is smooth and consistent. It loads faster than some other stones but cleans easily with a nylon brush and dish soap, and doesn't need flattening. It also comes with a dressing stone to remove any build up. I prefer to use the Naniwa flattening stone I purchased separately over the included dressing stone as that flattening stone is smoother than the included dressing stone and I think using the flattening stone will extend the life of this excellent stone.just use it, clean it occasionally and enjoy sharp edges. The technology used to make this stone is pretty incredible.If I had to pick one stone to sharpen with it would be this Naniwa 1K diamond resin. Gets the job done.

I sharpen daily my work knives (sushi chef) and recently got the 600 grit. Fast, really good for harder powdered steels, zdp189 and sg2. Super quick for blue steel supers. Great setup to finish with medium and fine grit stones after. (Im eyeing the 3k and 6k girl next)Its okie on vg10, I don't think it's worth it unless you have harder steel knives. I sharpen my coworkers knives, mainly vg10 and stainless steel (most likely aus10), it's good but I feel it's a waste to add wear on the stone. 500 grit Rockstar or kuromaki does quicker work on those, for a third of the price.Great stone for daily use, powdered steel, low maintenance. Keep in mind, the actual sharpening part is like 1 mm thick, the rest is the base. Idk how long it'll last, will update in the future.

Does a great job & brings the edge back nicely.

I started my sharpening stone collection long time ago and have many Naniwa resin bonded diamond stones as well as splash n go ceramic stones. Excellent and reliable.Great feedback, even with the polishing grits, when sharpening quality hi carbon steel knives and tools.

Nice smooth almost satiny feel when sharpening.Is doing a fine job on several of my high vanadium steels and gives a very aggressive toothy edge.So far, M390, S90v, and CPM M4. The surface is harder than the Veneve diamond matrix stones I have here.Tried the dual grit system with a veneve 240F+240 JIS and the Naniwa 600 JIS grit and later the 600 on one side and 800F +2000P grit diamond veneve on the other. Very smooth cutting in cardboard and very long lasting edge.The 240/600 was more aggressive and rough cut but lasted even longer.I will order a Naniwa in 400 JIS for further testing. (All grits followed by only one swipe each on 1 micron diamond compound on very hard very old wood mounted razor strop. any more kills the effects).KnifeMaker

This stone works extremely well and cuts harder steels with ease. I personally believe that this is fair priced for how well it works. Soapy water makes for extreme ease of use as well. Comes in an average size compared to many other stones. Would say that it is a bit heavier than ceramic stones but the weight really isn't compromising.