How To Sharpen Ceramic Knives: The Ultimate Guide for You

Ceramic knives are a popular choice for many people because they can be sharpened to the level of steel knives. But, if you don’t know how to sharpen ceramic knives correctly, then your knife will become dull and useless.

In this post, we’ll show you three different ways that you can use order to get your knife back into shape: using an electric grinder, whetstone, and sharpening rods. We’ll go over each technique in detail so that you know exactly what needs to be done in order to keep your blade as sharp as possible!

Some Rules When Sharpening Ceramic Knives

– Ceramic knife sharpening needs ideal symmetry. Focus on only 1 face at a time and alternate sharpening until the knife is sharp.

– Tools normally used to sharpen metal knives will not be useful when used with ceramic knives, but will only damage them.

– It is best to choose the sharpener right where you buy the ceramic knife for convenience.

– If you are not confident with your knife sharpening skills, it is best to seek professional help.

3 Ways to Sharpen a Ceramic Knife

Using an Electric Grinder

sharpen ceramic knife with Electric Grinder

This is the most basic and simplest tool for sharpening knives. You need to choose a device that has the right specifications for the nature of the knife, for example, never use a double-sided knife sharpener for a single-sided blade. Rules when sharpening ceramic knives with an electric sharpener:

  • Need to sharpen the knife in the direction from the handle, gradually to the blade.
  • The best grinding angle is at an angle of about 30 degrees. If the angle is too narrow, the knife will easily become dull later.
  • The lower the number of revolutions of the machine – the more precise the work will be.
  • The grinding speed of the machine should be low speed, slow motion.

Using A Whetstone

sharpen ceramic knife with whetstone

This is the easiest and most popular method, as it works with all knives.

Before sharpening, you need to soak the whetstone in cold water for about 20 minutes, then determine the sharpening edge correctly and sharpen the ceramic knife with sufficient force. You should especially note that when sharpening ceramic knives with a sharpening stone, the sharpening angle should remain constant.

Using Sharpening Rods

sharpen ceramic knife with sharpening rod

This sharpening method is similar to sharpening a knife with a whetstone. You need to hold the sharpening rod close to the blade, hold the sharpener upright, and then sharpen the knife with moderate pressure so as not to cause the knife to crack. Attention:

  • During the sharpening process, do not apply great force to the blade. The pressure should be gentle and even.
  • The grinding angle is from 18-25 degrees.
  • You need to sharpen the knife on a wet sharpener (soak the sharpener in water for a few minutes).

How To Care for Ceramic Blades

– Use plastic or wooden cutting boards for ceramic knives. Do not use cutting boards made of glass, metal, ceramic, or stone.

– Do not use ceramic knives to cut frozen food, meat with bones, or hard food.

– Do not put ceramic knives in the dishwasher. When washing knives should only be used by hand with mild detergent.

– Place the knife carefully, avoid throwing or dropping the knife.

– Don’t try to bend the blade.

– Keep the knife away from the fire so as not to melt the handle.

– If the knife turns yellow, wash it with mild detergent.

– Do not use a ceramic knife to crush garlic or open jars.

Can Ceramic Knives Be Sharpened At Home?


1. What type of sharpening stone should I choose to sharpen ceramic knives?

With each different grinding wheel surface, friction with the ceramic blade in different ways. The rough surface sharpens the edge of the knife, the medium surface smooths scratches on the knife, and the stone has a slight roughness that helps to polish the blade. Here are some types of grinding wheels and their main characteristics:

Types of natural grinding stones:

  • Arkansan: This is the name for the mineral novaculite mined mainly in the Arkansas state. Silicon oxide makes up almost 100% of this grinding wheel. It has a grain size of 1 to 6 microns and a special crystal structure that allows the stone to last for a very long time.
  • Vashita: Soft grinding stone originating from the US. It has excellent properties, but the strength is negligible due to its soft construction.
  • Japanese aquatic stone: This stone is considered a professional tool and is very popular with craftsmen because of its good sharpening effect. In recent years, Japan has restricted the exploitation of this stone to preserve mineral deposits, so it is not easy to own this stone.

Types of artificial grinding stones:

  • Artificial aquarium rock: Produced from chromium oxide, silicon carbide, and aluminum oxide. They act almost like natural aquatic stones, having excellent abrasive qualities. Before grinding, it is necessary to soak the stone with water for a few minutes.
  • Diamond Grindstone: This material has many different grain forms and is made from diamond chips. The sharp edges of diamond powder work well with ceramic blades. This stone is very durable, does not tarnish, and can last for hundreds of years.

2. How to polish ceramic blades?

Excellent material for polishing ceramic blades is a ceramic sharpening block. This stone can polish blades, needles, hooks, … easily.


After reading this post, you’ll now know how to sharpen ceramic knives. You can use an electric grinder or a diamond rod for this task. It’s also possible to do it by hand with a whetstone! We hope that the information we’ve provided has been helpful and informative. If there is anything else you would like us to cover on our blog, please don’t hesitate to reach out so we can create more content just for you!

Staff Writer At Saved By The Max

Hi, my name is Janet. I am the co-owner of Saved By The Max and a chef by trade. I studied food, art, and music in college and enjoy cooking French food as well as making craft drinks like cocktails and kombucha on tap!

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