S SATC Diamond Sharpening Stone 2 Side Grit 400/1000 Diamond Plate Honing Stone 8-inch Hone Sharpener White

I picked up this S SATC diamond sharpening stone specifically for guitar fret leveling, and it works like a charm. The 400 grit side quickly handles high spots, while the 1000 grit side smooths things out without needing much follow-up polishing. It’s flat, consistent, and makes the whole process faster and easier. If you’re doing fret work, this is a solid, affordable tool that gets the job done right.

I wanted an inexpensive diamond stone to sharpen my kitchen knives. In the past I've either used a variety of honing stones and a buffing wheel (slow and messy but produces an edge you can shave with), or one of those inexpensive sharpeners where you drag the blade through (fast but inconsistent results and doesn't always leave a good edge). I decided that something in between would be a better choice.I bought this based on a recommendation from the Outdoor55 YouTube channel. He uses this stone to sharpen several different blades very quickly, though he usually follows it up with a leather strop (I usually don't bother). When I saw it for sale for less than $20, I decided to try it.I used it to sharpen one of my large kitchen knives, an older Cutco that has seen a lot of use and abuse. Other reviewers state that the stone is initially quite aggressive and they are right. I placed a few drops of water on the 400 grit side and used it to (mostly) reprofile the edge of the blade. I then flipped the stone over and sharpened it with the 1000 grit side, again using some water. The stone leaves a fairly rough edge even when using the 1000 grit side, but this should improve once it breaks in a bit more.I spent perhaps 2 minutes on this blade. I didn't strop it afterward to get it really sharp, I didn't break in the stone, and I certainly didn't get anything perfect. All I did was to undo some of the irregularities that the drag-through sharpener had left behind and gave it a clean edge. When I was done, the knife was sharp enough to slice onions cleanly. It's sharp enough to use as-is, though it could easily be made sharper with a finer stone and/or a leather strop.The stone has some weight to it so it won't shift around while you're trying to sharpen your knife. No idea how it will break in over time, though I'm satisfied with its performance right out of the box. All I wanted was an inexpensive coarse/fine diamond stone that will make kitchen knives reasonably sharp quickly, and this stone does that. Someday I may strop one of the blades after using this stone to see how sharp I can get it, but for now I don't feel the need.

4 stars due to probably grit contamination? The 1200 is still fairly aggressive and will leave deep scratches. First of all, most all the bad reviews are from people who don't know what they are doing or talking about. I'm sure there are some duds that slip through QC, but most are just ignorant. I bought the 400/1000 and 600/1200. I've only used them to grind the factory scratches off a couple Scandi ground knives. Much more grinding than is required to sharpen. These stones work very well. I didn't feel like they required much break in compared to other cheap diamond sharpeners I've used. In practicality, I don't think you really need both the stones I bought as even the 1200 is fairly aggressive. Could be due to grit contamination? Anyways, one of these and a good strop will get most any knife scary sharp. It's technique over gear.

I liked it so well I bought another one in a few days. Some things in life are better than you expect, not many but this is one of those things.

Works well. Even after getting a nicer stone, I still use the 400 grit side at times. The 1000 grit side works well too, though it leaves a rougher finish than I want on woodworking tools. It’s effective, and the price is hard to beat.

This is pretty good. I have Japanese water stones etc, but this is a quick easy to sharpen.

Decent for the price. We will see how long it lasts but I have got good use out of it.

I saw this product on YouTube and decided to try it. As a low grade whetstone, it is obviously aimed at correcting quite substantial irregularities in the knife’s blade. I must say, however, that this whetstone is great at this purpose and makes the job of doing away with chips and blade issues extremely easy and fast (in comparison to other whetstones, still some time and effort is necessary of course). I highly recommend this product. The only reason I say I probably will not buy it again is that it will most likely last a lifetime. I am a very satisfied customer.