I really like this stone. The 1000/4000 grit combination is perfect for my needs. I'm a woodturner, and belong to a club that brings in professional turners from around the world. One had an eye opening test of sharpness. He stacked around 25 new razor blades in a box with one open side. The box assured that the blades were in perfect alignment. If you looked at the blades' sharp ends head on, all you saw was black. His point was that if you can see the edge, the blade is not sharp. Any reflection from the edge, again, facing it head on, is a dull spot. My long story leads to the fact that I was able to sharpen several knives to the point of not seeing the edge. This is not the stone to use if you are trying to remove nicks from a blade. A lower grit will do that job. This is for putting a fine, "invisible" edge on the blade, and with the right technique, that's what it will do. Another thing to consider is the fact that these stones are "sacrificial" A stone wears because it is deliberately giving up dull surface particles to expose the sharp ones below them. Anyone expecting a stone to last forever is mistaken. Bottom line? I think this is a great stone that takes my knives to the level of sharpness I need in both woodworking and cooking. I also like the rubber frame it sits in, giving you much better control over the stone. Your efforts can go into sharpening without having to steady the stone on your workbench or countertop.
Understanding Grit: You’ll see a bunch of numbers being thrown around when discussing the grit of a sharpening stone. The number refers to the size of the grit. The larger the number, the finer the grit. A good beginner stone would be a two-sided stone with #400 and #1000 grit. The #400 grit is the courser stone for working out the nicks and imperfections, the #1000 grit is for refining.

We tend to recommend natural Japanese water stones only to experienced users who are thoroughly familiar with the synthetic Japanese sharpening stones. Natural stones are not to everybody’s taste and there are inevitably many uncertainties with regard to their grit grade, which cannot be determined exactly, their hardness and their suitability for certain types of steel.

I purchased this set together with the 400/1000 grit stone assuming that some of my knives were quite dull and would need work on a coarse grit stone. Premium Whetstone Sharpening Stone 2 Side Grit 400/1000 | Knife Sharpener Waterstone with NonSlip Rubber Base & Flattening Stone. This is my first wetstone. First off I tried to sharpen my Chicago Cutlery boning knife. This knife is nearly thirty years old, has been abused in may ways and was quite dull. It was very difficult for me to get a burr on this blade, which I attribute to poor technique. Next I moved on to my Henckels Professional S paring and chef's knives. The paring knife was moderately sharp and was modestly improved after working over all three grits of stone. It would cut paper but again it was difficult to develop a burr with this blade. Undaunted I switched to the chef's knife. This knife is twenty years old and has never been professionally re-sharpened. I have sharpened it twice with a Lanksey sharpening system which marred the finish but did put a good edge on the blade. Lansky Standard Coarse Sharpening System with Fine Hones. The chef's knife was moderately dull and had several pits visible on the cutting surface. I modified my technique for passing the knife over the stone and worked the chef's knife over the 400 grit stone aggressively and eventually I was able to get a burr to form from the tip of the knife all the way to the handle. From there it was a simple process of reforming the burr on the 1000 grit stone and then finishing on the 6000. After sharpening, the chef's knife easily and cleanly slices a tomato with very light pressure and is in my opinion very sharp. Not sushi knife sharp but more than enough for the chopping and slicing I expect of it. I'm looking forward to going back and working both the boning knife and the paring knife over again. Don't expect a good result from this product the first time you use it. Watch videos on using a wetstone, expect to spend at least twenty minutes per knife at first, and practice forming a burr. If you can form a burr, you will be able to successfully sharpen your knife.
You must put the knife blade's position at the perfect angle which is called "against the stone." What's important is the blade should be facing opposite from you. Where you've determined where the bevel angle is located, then this is what you will position against the stone. It's a good idea to know the differences between various angles for certain blade uses. There's a certain height of the blade that it should be from the stone. You'll be able to find various charts on height of the blade online. Normally, for a pocket knife or kitchen knife, it'll be 17° - 22° angle against the stone. The "Rule of thumb" is the smaller the angle, the sharper the knife. Most makers will have it in the instruction or on their official website.
Dull knives aren't just annoying — they can be downright dangerous. Keep yours in top shape with the Sharp Pebble Knife Sharpening Stone. It has a #1000 grit side for dealing with dull edges, and a #6000 side for honing to razor-like sharpness. It sits inside a silicone base, inside a non-slip bamboo base, and comes with an angle guide that slides over the spine, ensuring that even beginners can set a proper edge.
Diamond hones are made from very small, industrial grade, diamonds adhered to the face of a metal or plastic plate. Also, because Diamonds are so much harder than any of the other sharpening materials, they tend to cut very fast and last much longer than the other whetstone materials. But, they are also often more expensive to purchase. In addition, Diamond Stones generally consist of three different styles consisting of a solid metal plate coated with an adhesive and diamond dust with holes in the plate to allow the swarf to escape, a solid plate without holes for sharpening tools with corners that might catch in the holes, and a plastic plate with islands of exposed plastic interspersed with the adhesive and diamond dust to act as a lubricant.

Sharpal 102N 5-in-1 Knife and Hook Sharpener features Sharpal 102N 5-in-1 Knife and Hook Sharpener features pre-set crossed carbides for quick edge setting and ceramic stones for fine honing. Multi-groove sharpening stone is designed to sharpen fishhooks of various sizes. It comes with rubber over-molded body and feet for secure and comfortable grip. Moreover integrated compass built-in rust-proof ...  More + Product Details Close
Select the grit of the stone. Sharpening stones are available with different grit sizes. For example, you can choose fine, medium and coarse stones. You should use a coarse stone followed by a fine grit if your knives are dull. If your knives have been sharpened recently or they aren't too dull, consider using a medium grit. Try to use a grit level ranging from 325 (for coarse) to 1200 (for extra fine).[3]
Selecting the proper coarseness for your sharpening stone is an important first step in sharpening your knife. Not every knife needs to start at the coarsest stone you have, on the other hand a very dull knife can not be sharpened on only your finest stone. Starting with the proper coarseness will ensure that you achieve the edge you need quickly. If your knife is very dull or has a nicked blade, start with your coarsest stone. The coarse stone removes material quickly so a poor edge can be refined quickly. However, the coarse stone must be followed up with your finer stone to refine the edge. If your knife is only slightly dull and just needs a quick touch up, starting at a medium or fine stone can save you time. Starting on a fine stone requires fewer steps but must only be used on an edge requiring little work.

Low Grit Stones: A sharpening stone with grit number less than a 1000 is generally used for knives and tools that are damaged. If your blade has any nicks or chips in the blade, the stones will take care of them in a jiffy! They usually have a coarse side for nicks and chips, with the other side for general sharpening. Even if the knife’s edge has become totally blunt, the stone will re-sharpen it perfectly.
Practice holding the knife at a 20 degree angle. Most straight blades need to be sharpened at a 20 degree angle. To find the angle, hold the directly in front of you so it's straight up and down. This is 90 degrees. Tilt the knife halfway towards the table so it's at a 45 degree angle. Tilt the knife halfway again so it's about an inch (2.5 cm) above the table. This should be a 20 degree angle.[4]
I recommend it as a lightweight alternative to larger stone for smaller knives. Leather necklace is comfortable and seems strong. I conditioned it for suppleness and swim with it on tightened as a choker. Stone is small, dog-tag size. I use it with water. Functional for small folder knives and multi-tools. Not useful for large fixed blades, since you can't make a long stroke. Small to grip. I use double-sided tape on one side to keep it in place on a flat rock. Not sure of grit, seems like around 1000. It took a while, but i got my old boy scout knife sharp.