Short Answer
Learn how to use a sharpening steel to hone and maintain your knife's edge, including technique, common mistakes, and what a steel can and cannot do.
What Is a Sharpening Steel?
A sharpening steel is a long, rod-like tool, usually made of steel or ceramic, with a handle. It is commonly found in kitchen knife sets and is used to maintain the edge of a knife between sharpenings. Many people call it a sharpening steel, but it actually hones the blade rather than grinding away metal like a whetstone does.
The steel's surface is typically ridged or grooved, which helps realign the microscopic teeth on the knife's edge. Over time, the edge of a knife can bend or fold over from use, making it feel dull. Running the blade along the steel straightens those tiny imperfections, restoring sharpness without removing significant material.
It is important to understand that a steel does not sharpen a knife in the traditional sense. It hones it. For a truly dull or damaged edge, you would need a whetstone or other sharpening tool. But for regular maintenance, a steel is an excellent way to keep your knife performing well.
How to Use a Sharpening Steel: Step-by-Step
Using a sharpening steel correctly takes a bit of practice, but the basic technique is straightforward. First, hold the steel vertically with the tip resting on a stable, non-slip surface, such as a cutting board with a damp towel underneath. Grip the handle firmly with your non-dominant hand.
Avanti, hold the knife in your dominant hand with the blade facing away from you. Place the heel of the blade (the part closest to the handle) against the top of the steel at a 15-20 degree angle. The angle is crucial: too steep and you'll round the edge; too shallow and you won't affect the edge at all.
With light pressure, draw the knife down the steel in a sweeping motion, moving from the heel to the tip. The blade should glide smoothly from the top of the steel to the bottom. Repeat this motion on the other side of the steel, alternating sides for even honing. Typically, five to ten passes on each side are sufficient for routine maintenance.
Remember to keep the angle consistent throughout the stroke. It helps to imagine you are trying to slice a thin layer off the steel. Practice slowly at first to get the motion right, then increase speed as you become more comfortable.
Choosing the Right Angle
The angle at which you hold the knife against the steel is one of the most important factors. Most Western-style knives have a bevel of about 20 degrees per side, while Japanese knives often have a sharper 15-degree angle. When honing, you want to match the existing bevel angle as closely as possible.
A simple way to estimate the angle is to start with the blade flat against the steel, then tilt it about halfway to the desired angle. For a 20-degree bevel, that would be about 10 degrees from the steel's surface. Many cooks use a 15-20 degree angle as a general guideline, but you should adjust based on your knife's original edge.
If you are unsure, err on the side of a slightly shallower angle. Too steep an angle can dull the edge by rounding it over. You can also check the manufacturer's recommendations for your specific knife, as some brands specify the ideal honing angle.
Common Mistakes to Avoid
One of the most common mistakes is using too much pressure. A steel is meant to hone, not grind. Pressing hard can actually damage the edge or create a burr. Use light, even pressure and let the steel do the work.
Another mistake is using a sawing motion or moving the knife back and forth. The stroke should be smooth and one-directional, from heel to tip. Sawing can create uneven wear and reduce the effectiveness of honing.
Also, avoid using a steel on a knife that is very dull or has nicks. A steel cannot repair significant damage; it only maintains an already decent edge. For dull knives, you need a whetstone or professional sharpening.
Finally, don't forget to clean your steel after use. Food particles and oils can accumulate on the rod, which can transfer to your knife. Wipe it with a damp cloth and dry it thoroughly.
Steel vs. Ceramic vs. Diamond Rods
While the term 'sharpening steel' is common, there are actually different types of honing rods. Traditional steel rods are made of hardened steel and are ideal for regular honing of most kitchen knives. They are durable and provide a slight abrasive action.
Ceramic rods are harder than steel and provide a finer honing action. They are excellent for maintaining a very sharp edge, especially on Japanese knives. However, they can be brittle and may chip if dropped.
Diamond rods have a surface coated with diamond abrasive, making them more aggressive. They can remove small amounts of metal and are useful for touching up a slightly dull edge. However, they should be used with care, as they can remove more material than necessary if used too often.
The choice depends on your knife type and how often you hone. For most home cooks, a traditional steel is sufficient. For enthusiasts with high-end knives, a ceramic or diamond rod might be a better fit.
Can You Sharpen Serrated Knives with a Steel?
Serrated knives, like bread knives, have a scalloped edge that requires special care. A standard sharpening steel is not effective for serrated edges because the rod is too thick to fit into the serrations. Using a steel on a serrated knife can actually damage the teeth.
To maintain a serrated knife, you need a tapered sharpening rod that is thin enough to fit into each serration. These rods are often made of ceramic or diamond and come in a set of different sizes. You insert the rod into each serration and gently file the edge.
Alternatively, you can have a professional sharpen serrated knives. It is a delicate process that requires precision. If you attempt to sharpen a serrated knife yourself, be sure to use the correct tool and technique to avoid ruining the blade.
Can You Sharpen Ceramic Knives with a Steel?
Ceramic knives are extremely hard and hold their edge for a long time, but they are also brittle. A traditional steel is not suitable for sharpening ceramic knives because the steel is softer than the ceramic and will not effectively hone the edge. In fact, using a steel on a ceramic knife can cause chipping.
To sharpen a ceramic knife, you need a diamond abrasive, as diamond is harder than ceramic. Diamond-coated sharpening rods or whetstones are the appropriate tools. However, sharpening ceramic knives is tricky and often best left to professionals, as the material can easily chip or break.
If you own a ceramic knife, it is wise to have it professionally sharpened when it becomes dull. Attempting to sharpen it at home with the wrong tools can ruin the blade.
How Often Should You Use a Steel?
The frequency of honing depends on how often you use your knives. For a home cook who uses knives daily, honing once a week is a good rule of thumb. Professional chefs may hone their knives every day or even before each use.
You can tell your knife needs honing if it feels less sharp when cutting. A simple test is to try slicing a tomato or a piece of paper. If the knife struggles, it's time to hone.
Remember that honing is not a substitute for sharpening. Even with regular honing, your knife will eventually need to be sharpened with a whetstone or sent to a professional. The frequency of sharpening depends on use, but typically every few months for a busy kitchen.
Final Tips for Maintaining Your Knife's Edge
Using a steel correctly is just one part of knife maintenance. Always hand-wash your knives and dry them immediately to prevent corrosion. Store them in a knife block, on a magnetic strip, or with blade guards to protect the edge.
Use a cutting board made of wood or plastic, never glass or stone, which can dull the blade quickly. Avoid cutting on hard surfaces like countertops.
When honing, make sure your steel is clean and dry. If you have a steel that has become smooth over time, you may need to replace it, as it will no longer effectively hone.
By incorporating regular honing into your routine and following proper care practices, you can keep your knives sharp and safe for years to come.
FAQ
Does a sharpening steel actually sharpen a knife?
No, a sharpening steel does not sharpen a knife in the traditional sense. It hones the edge by realigning the microscopic teeth that become bent during use. This restores sharpness temporarily. For a truly dull or damaged edge, you need a whetstone or professional sharpening.
What angle should I use when sharpening with a steel?
The angle should match the knife's existing bevel, typically 15-20 degrees. For Western knives, use about 20 degrees; for Japanese knives, about 15 degrees. Start with the blade flat against the steel and tilt it halfway to the desired angle. Consistency is key.
Can you sharpen a serrated knife with a steel?
No, a standard steel is too thick to fit into the serrations and can damage them. Use a tapered sharpening rod designed for serrated edges, or have it professionally sharpened. Each serration must be honed individually.
Can you sharpen a ceramic knife with a steel?
No, a steel is softer than ceramic and will not effectively hone it. Using a steel on a ceramic knife can cause chipping. Use a diamond abrasive or have it professionally sharpened, as ceramic is brittle and difficult to sharpen at home.
How often should I use a sharpening steel?
For regular home use, honing once a week is sufficient. If you use knives heavily, you may need to hone more often. A good indicator is when the knife feels less sharp. Remember, honing is maintenance, not a substitute for sharpening.