Sharpening a knife is an ancient art and skill that dates back to the Stone Age, when tools and weapons were first crafted from sharp stone. Since then, skilled craftsmen have relied on different materials like stones, ceramic rods, and diamond stones to keep their blades sharp. Diamond stones are especially popular among professional chefs due to their extreme durability, which allows them to be used on both soft and hard blades. In this guide, we’ll explain the steps for sharpening a knife with a diamond stone.

Prepare the Knife: Before beginning any sharpening process it’s important to ensure that your knife is clean and free of any debris or rust. A damp cloth can be used to wipe away debris while removing any rust spots with fine grit sandpaper or steel wool.

Master the Angle: Depending on the type of blade you are using, the angle at which you sharpen will vary between 10-20 degrees. It’s important to make sure that you keep your angle consistent throughout the process in order to get a nice even edge. You should also remember that sharper angles result in a sharper edge, but are more difficult to maintain consistency with other blades.

Begin Sharpening: Place your diamond stone flat against a non slip surface such as a cutting board or countertop and press firmly as you begin making strokes away from yourself across your blade. You should make sure to use small circular motions as well as strokes going lengthwise down your blade in order to evenly disperse metal particles throughout the entire length of the blade’s edge. As you work through each side of your blade switch up the angle slightly in order generate enough pressure for an effective sharpening job.

Inspect & Polish: Once you have finished sharpening your knife inspect it closely for any imperfections or burrs along its edges before polishing it off with some light oil or wax so that its expertise remains untarnished. With these simple steps you will be able to not only sharpen but also care for your knives properly so they last longer and provide a reliable service over time!

Preparing to Sharpen a Knife with a Diamond Stone

A diamond stone is the best choice when it comes to sharpening a knife. A diamond stone has a hard and long-lasting surface, meaning it won’t wear out over time and can sharpen knives very quickly. This makes it suitable for both commercial and home use. Additionally, because of the diamondstone’s durability, you won’t need to replace your stone as often as you would with other materials like stones made from softer materials such as ceramic or natural stone. When choosing a diamond stone, look for one that is labeled “coarse/extra course” or “medium/fine.” Coarse stones will be best for heavily dulled blades while medium/fine diamonds are better suited for lighter duties. Be sure the diamondstone fits comfortably in your hand; the overall weight of the stone should be roughly equivalent to 1-2 times the weight of your blade.

Step-by-Step Process

1. Begin by clamping the knife in a vise or using a leather strap to hold it firmly in place.

2. Take your diamond stone and position it at roughly an angle of 10-degrees between the blade and the stone.

3. As you move the blade gently across the diamond stone, press down gently but with consistent pressure. Draw each swipe towards you, removing as little metal as possible per pass – no more than two passes recommended on each side of the blade.

4. Continue this motion until a burr is formed on either side on the edge to ensure even sharpening of both sides of the blade.

5. To remover any residual burr left on either side of the blade, turn over the stone and perform five strokes on each side against its smoother surface while keeping your angle consistent with the initial sharpening angles – use light pressure here as well.

6. Finally, rinse off both sides of your newly sharpened knife with warm water and follow up with a kitchen towel for drying purposes – congratulations, you’redone!


Scenario 1 – Sharpening a Dull Knife: Secure the diamond stone in a vise and make sure it will not move. Place the blade of the knife across the top of the diamond stone and move it back and forth in an “X” pattern. Hold the knife at a 15-degree angle compared to the diamond stone, using light pressure. Once you feel that your knife has been sharpened evenly on both sides, run your thumb lightly along the side of your knife to check its sharpness.

Scenario 2 – Refining an Already Sharp Knife: Slightly dampen one side of the diamond stone with water or oil before beginning. Place the blade flat on top of the opposite side and draw it across with moderate pressure in a curved motion like folding a piece of paper over; this should result in a very smooth edge to make further honing unnecessary. Make sure to cover both sides of the blade evenly by flipping it over once you are done with one side. Finally, test your blade’s new sharpness with your thumb as described above.

Cleaning and Storage of Equipment

When using a diamond stone to sharpen a knife, it is important to properly prepare your tools, equipment and workspace. Make sure that all surfaces are clean and free from dust or residue as any particles can affect the sharpening process. It is also important to assemble your tools before beginning, such as placing an appropriate honing oil on the block, having diamond abrasives of different grades ready for use, and placing a cloth nearby for wiping away excess oil afterwards.

Once the knives have been sharpened, be sure to thoroughly wash and dry them with a soft cloth before storing so that no residual oils stay on the blade. When storing your knife after sharpening with a diamond stone, make sure to place it in a well-protected area as natural elements like air and moisture can pull rust onto the blade if stored in unsheltered areas. Taking care of your knives by regularly cleaning them will provide maximum performance and help extend their longevity.


Sharpening a knife with a diamond stone is one of the most popular sharpening methods because diamond stones offer a very effective and easy to use sharpening process. Benefits of this method include the minimal amount of effort needed to keep knives in good condition, as well as the ease of storage and portability. Additionally, diamond stones are relatively affordable and provide adequate sharpening results with only occasional maintenance.

However, there are some drawbacks to using a diamond stone for knife sharpening. First, it can often take several passes over an area in order to remove imperfections or burrs on the blade; this can take time and great care must be taken not to over-sharpen the blade. Additionally, since diamond stones use fine particles of abrasive material for sharpening, they become clogged up with metal shavings rather quickly and will require frequent cleaning. Lastly, precision cannot necessarily be achieved in all cases as finding the correct angle is not always intuitive or straightforward.


Sharpening a knife with a diamond stone is not as difficult as it may seem. First, begin by soaking the diamond stone in water for about 10 minutes. This helps protect the stone from damage and provides lubrication for the sharpening process. Then, you will want to find the proper angle for your blade. The standard angle is 20 degrees per side, but this can vary depending on the blade type and personal preferences. Place your blade against the coarse side of the diamond stone and maintain this angle while pushing forward 5-10 times on each side. Once finished with that side, switch to the fine side of the diamond stone and repeat the same motion. Remember to keep your motions in strictly one direction; going back and forth could cause your knife to become over-sharpened or damaged due to increased friction. When finished sharpening, be sure to clean off all excess material from your knife and stone.

For those with more advanced experience, specialized techniques can also yield great results when sharpening a knife with a diamond stone. For example, professional cutlery sharpeners often use something called ‘stropping’ which combines leather strips coated in abrasive cream or powder together with pull strokes across the diamond stones for a finer finish than regular sharpening activities can create. Finally, some specialty blades like Santoku knives will require larger angles such as 32 degrees per side instead of just 20 degrees per side due to their unusual shapes. Make sure you research any special knives before attempting to sharpen them at an incorrect angle! In general, using medium pressure combined with gentle strokes should be enough to properly sharpen most blades without damaging them – however each type of blade is unique and will require customized techniques for achieving optimal results every time!