This is a hard review to write because while the stone is great and comes perfectly flat it's too darn small. My problem is I bought one of these over fifteen years ago and after a move it suffered two cracks across the face making it unusable. That stone is about 3" x 8 1/4" x 3/4" . This new version is about 2" x 7" x 1/2". It's practically impossible to polish a knife set from a big #7 plane let alone a #4 plane. I feel cramped even using it for chisels! The thickness doesn't really bother me even though my thicker stone cracked, with reasonable care I don't expect this one to crack. So although I love the actual stone I wish they still made my old stone. I guess I should have measured my original one and then compared the description but I assumed they would be the same. So because of that I took off one star but since there's nothing wrong with the actual stone I wanted to give it three stars based on the small size but couldn't.

Prep your stone: To adequately lubricate the stone, rough and medium whetstones should be soaked in water for 20 to 30 minutes, or until air bubbles stop rising, before use. Finishing stones should not be soaked, as they are prone to cracking. Instead, sluice a fine-grit stone with water and use a nagura, or dressing stone, to create a slurry of silt for improved polishing. Once ready, place a sharpening base on a flat surface and fit the whetstone on top of it.
It is believed that Vikings suspended these knife sharpening tools from their belt. However, it is not exactly clear, even to scholars, how the Vikings wore these pendants. We laced ours with a versatile, adjustable high-quality leather cord and packed it in a USA-made muslin pouch so you get to choose how to wear it or carry it. Wear it around the neck for the most Ragnariest looking necklace you’ve ever seen, cinch it all the way down so that it can be hitched to your belt or clipped onto your pack, or simply pocket it while still contained in the hand-stamped muslin pouch.
The toughest angle to master is the angle at which you'll sharpen the edge of the knife. For a Japanese knife, that should be around 12-15 degrees. Before you reach for the protractor, a good test is to get roughly half an index finger's gap between the spine of the knife and the stone (see above). Remember to remove your finger before you start sharpening. For a Western-style knife, you want an angle of about 20°, so raise it ever-so-slightly higher.

This is the best sharpening stone of its kind for the money. It's conventional wisdom that proper sharpening requires starting from a coarse grit abrasive to remove blunted or mechanically fatigued metal before sharpening and polishing with progressively finer grits, however, in my experience it is generally less time consuming and more effective to use this stone for general purpose sharpening unless abnormally great care is needed. This stone is aggressive enough to produce noticeable results quickly yet it is fine enough to still be useful in refining knife edges to push cutting performance levels and polishing a knife's bevels to mirror like reflectivity (albeit deeper scratches in the metal will be visible unless you have successfully gone through the more traditional low to high progression of grit levels). This can be the only sharpening device for knives you will need unless you are in the business of making knives or sharpening large numbers of knives on other people's behalf.

First time buyer, very pleased with the quality of the stone. They package it perfect for a chef, I never have to worry about my stone chipping in my bag. I use vg10 steel, and it's a perfect double sided stone for sharpening and polishing my blades. And something I didn't know when I bought it, if you register you purchase they might send you something to try. Very progressive company!
High Grit Stones: These are also known as finishing stones with the number range going up to 8000, and give you a super refined edge.  They work great with Western knives as they cutting edge resembles a “U” as opposed to a “V”. If you are using your knife to cut meat, then you can happily stop at 4000 or 6000 grit. If you are only using it for vegetables or fruit go all the way to the 8000.

You might not need to spend hundreds of pounds to get the best knife sharpener, but you do need to know what you're doing. Warner gave me a crash course in the technique. As a newbie to this method, it took a while to get used to (especially since Warner handed me a knife that had never previously been sharpened) but after half an hour's practice and a little encouragement, I got the hang of it. Here's what I learned...
Method 2: Send it out to a professional. This is a good option, provided you have a good knife sharpener living nearby, and are willing to pay to have the services performed. If you plan to sharpen your blades a dozen or so times a year, as I do, this can get quite expensive. All but the best professionals also use a grinding stone that, again, will take away much more material than is necessary from your blade, reducing its lifespan. Want to forge a stronger relationship with your blade? Then you'll want to...
Clauss DualDrive is the first non-chuckable sharpener for Clauss DualDrive is the first non-chuckable sharpener for both #2 and carpenter pencils. Just use with your current bit on the fly. Manual or power-driven design evenly sharpens. Integrated shaving reservoir with see-through window. Features high carbon steel blades and a lifetime warranty.  More + Product Details Close
4. Start sharpening the first side of the blade. With your blade set at the prefect angle, you’re ready to start sharpening. Imagine you’re carving off a slim piece of the stone’s surface. Personally, I bring the blade into the stone. Other people stroke the blade away from the stone. Both ways work, so just use whatever technique you prefer. If the knife blade is curved or if it’s longer than the stone, you’ll need to sweep the blade sideways as you work, so the entire edge is sharpened evenly. Apply moderate pressure as you sharpen. No need to bear down hard on the blade. After you make one stroke, start back at the beginning and repeat. Do this about 6-12 times.