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How to Sharpen Ceramic Knives

11 January, 23

Ceramic knives are a great addition to any kitchen. They are lightweight, easy to clean, and stay sharp for longer. However, just like any other knife, ceramic knives will need to be sharpened from time to time.

In this article, we'll discuss how to sharpen ceramic knives safely and effectively:

Types of Ceramic Knives

Ceramic knives come in various sizes and shapes and are ideal for a variety of cutting tasks. They are sharp, light, and durable. These knives feature blades made from zirconium oxide material which is harder than steel. It requires superior sharpening skills for optimal performance, as ceramic knives do not respond to the usual sharpening treatment that applies to steel blades.

The two main types of ceramic knives are low-end and high-end models. Low-end models typically come with a single standard edge and a white or black handle; they are rust proof and easy to maintain. High-end varieties usually have double edges, an ergonomic handle design, an antislip grip, and longer blade lengths; they tend to be more expensive but also offer superior quality cut with each use.

Whether you choose a low or high end variety of ceramic knife, it is important to keep it sharp following these few tips:


Before you begin sharpening your ceramic knives, there are certain things you should do to prepare. First, consider the condition of the ceramic blade you’re working with. Make sure the blade is free from any nicks or chips, as sharpening these can be more difficult. Additionally, choose the best sharpening tool for ceramic, like a honing steel, ceramic sharpener, or whetstone. After you’ve selected the right sharpener and inspected the blade, it’s time to get sharpening.

Assemble the Essential Tools

Sharpeners designed specifically for ceramic knives provide the best results, with a sturdy base and adjustable angles. Additionally, you will need a selection of fine grit sharpening stones, typically ranging from 220 to 800 grit and a base block or mat that won’t be easily scratched by the stones. Once all of your tools are assembled, you can begin the sharpening process.

If you don’t want to invest in additional sharpening equipment for your ceramic knife, honing steels are an economical alternative. Be sure to choose only diamond honing steels with a minimum 500 grit rating, as conventional honing steels will be too harsh and can actually damage the blade of your knife.

Clean the Knife

Before sharpening a ceramic knife, always make sure it is cleaned of dirt and debris. Even tiny particles can interfere with the sharpening process, resulting in an ineffective edge.

The best way to clean your knife blades is to use mild soap and warm water. Never scrub or put undue pressure on the blade, as this can scratch or damage the edge. Instead, gently wash each side of the blade using a soft cloth or sponge. Rinse off any soap residue and dry each side with a clean towel before storing or sharpening your ceramic knives.


Sharpening a ceramic knife is a bit different from sharpening a steel knife. Ceramic knives can be damaged during the sharpening process if not done properly. It is important to have the right tools and techniques in order to sharpen ceramic knives properly. This article will discuss the steps and tools needed to sharpen ceramic knives and help ensure that they are sharpened safely and effectively.

Use a Honing Steel

When you buy ceramic knives, it is important to learn how to sharpen them properly. Honing steel is the most popular and effective tool for sharpening ceramic knives. A honing steel is a long rod, usually made of stainless steel, and it can help keep the knife sharp by removing burrs, which are tiny pieces of material that create an uneven edge on a knife blade. This process of removing burrs and restoring the original sharpness of your knife should happen at least once every six months and more frequently if you use your knife often.

To use a honing steel:

  1. Place the honing steel on a clean counter or cutting board with one hand on top of the handle and the other hand firmly gripping the blade near its tip. Make sure that both hands are at least six inches apart so there is no risk of accidentally cutting yourself.
  2. Gently draw your Ceramic Knife across the honing steel with an angle between 15° - 20° starting from threshold (tip) to spine (base). You will do 10 strokes along each side for both sides of your blade on each stroke, then finish off in a circular motion around where you started until you have gone all the way around 6-8 times for each side of your ceramic knife blade. The circular motion creates an even edge along both sides of the ceramic knife cutting edge.
  3. Wipe off any excess residue created by honing away with a damp cloth then proceed to use your Ceramic Knife as needed!

Use a Diamond Sharpening Rod

Using a diamond sharpening rod is one of the most efficient ways to sharpen ceramic knives. This is because diamond is the hardest material available and can easily sharpen the hardened ceramic surface of a knife. It is also important to use only a diamond sharpening rod due to the fact that ceramic knives cannot be sharpened with traditional blades, such as those made from steel or aluminum.

The process for sharpening with a diamond sharpening rod is simple and straightforward. First, ensure that the sharpening rod prevents any oil or other contaminants from coming into contact with the blade since this can cause damage and even cause it to break apart. Start at one end of the blade, begin slowly drawing it along the rod in a sweeping motion while applying downward pressure on both sides of the blade, forcing it into contact with the abrasive material on the rod.

Do this repeatedly until you have achieved your desired smooth and even edge all along both sides of your blade. In general, you should aim for about 8-10 continuous laps per side though you may need more depending on how dull your knife was before beginning this process. Make sure not to press too hard as this may cause indentations in the ceramic and ultimately damage your knife. Once you have finished using your steel rod, be sure to inspect both sides of your blade for any burrs or imperfections and repeat if necessary until you have reached optimal results!

Use a Wet Stone

Sharpening a knife or other cutting instrument with a wet stone is the traditional method that has been used for centuries and is still the preferred technique for achieving a precision edge. This type of sharpening requires a higher level of skill and should not be attempted by novice sharpeners.

The stone must first be prepared by soaking it in water for at least an hour until all air bubbles are gone from the pore structure of the stone. Then it should be placed on a flat, non-slip base and lubricated with oil, such as mineral oil or vegetable oil. A piece of leather, cloth or towel may be placed between the stone and its stand to prevent slipping during use.

To sharpen with this technique, start by placing your blade with its edge down onto the wet stone. With light pressure move in circles as you tilt your blade against the direction of motion so that both sides of your cutting edge understand equal pressure to produce uniform results. Make sure not to drag metal shavings off onto the opposite side of your blade as this can create unevenness; you should strive instead to maintain vertical uniformity while sharpening angles of 15 - 25 degrees average in included angles from tip to spine along both sides and all facets. An even number finish strokes across the blade will give your knife a perfect edge fit for any task at hand!


Regular maintenance is key to keeping your ceramic knife sharp. Cleaning and sharpening are the two main steps when it comes to keeping a ceramic knife in top shape. Cleaning your ceramic knife is a necessary step to prevent bacteria buildup, while sharpening is necessary in order to maintain the blade’s sharp edge.

In this section, we’ll discuss the importance of both of these steps and provide tips and techniques to properly sharpen and clean your ceramic knife:

Sharpen the Knife Regularly

It’s important to sharpen ceramic knives regularly to maintain their cutting edge. As you use a ceramic knife, the fine microscopic edges of its ceramic blade will wear away. This is why these knives need to be sharpened more frequently than metal ones do. It’s best to sharpen a ceramic knife after every 10 uses or so, but this number can vary depending on how hard material is being cut and the use of other knives alongside it, as metals can cause tiny chips in the blade if they come in contact with each other.

Here are some steps for how to sharpen a ceramic knife:

  1. Gather the necessary tools. You’ll need a diamond sharpening rod and a microfiber cloth or other type of soft cloth; try not to use paper towels as this may scratch your blade. You may also want an angle guide or something similar for reference when honing your blade; otherwise, you can work by eye.
  2. Position the blunt edge of your knife at a 10 – 20 degree angle against the diamond Sharpening rod (if using an angle guide, adjust accordingly). Push the blade away from yourself in one swift movement through the diamond sharpening rod until it reaches the end of the blade. Note: Keep an even pressure on both parts of your knife as you move it along – too much pressure on either could damage your blade and will not help maintain its perfect cutting edge.
  3. Turn and repeat this motion several times until you feel that your knife has been sharpened evenly across its surface; pay attention particularly to any blunt areas that may still feel dull against your finger pad when tested afterwards. Lightly wipe down any residue from both blade and honing rod before storage with a microfiber/soft cloth when finished honing for extra safety/protection for you and surrounding surfaces!

Store the Knife Properly

Once you have sharpened your ceramic knife, it is important to store it properly in order to keep the blade in good working condition. Always store your ceramic knife separately from other knives and utensils, as the blade can easily become damaged in the wrong environment.

To protect the blade, you should use a suitable knife block or store the knife in its own separate sheath. This will help prevent accidental cuts or chips on the blade's edge. If you opt for a plastic sheath, make sure it has several small holes so air can still reach the blade surface; this will help avoid moisture buildup around the edge that could lead to rusting.


Sharpening ceramic knives is a relatively straightforward process and will extend the life of your knife substantially. With the right materials and a steady hand, you can make sure that your knife can continue to work as efficiently as you need it to.

It’s important to remember that sharpening ceramic knives requires more frequent attention than other kitchen knives due to their hard material. Regular honing with a diamond rod is the best way to keep them from becoming too dull or damaged. When in doubt, replacing your blade altogether may be the best option for keeping these delicate blades in working condition.

Ultimately, understanding what types of sharpening are safe for your blades and how often they need attention will give you peace of mind when it comes time to reach for them in your kitchen drawer. With a bit of practice and preparation, you’ll be able to enjoy using a razor-sharp ceramic knife for years to come!


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