bench grinder knife sharpener

How to Sharpen a Knife with a Bench Grinder-Easy Steps 

If you’re like most people, you probably don’t have the time or space to spend hours sharpening your knives using a manual method. That’s where a bench grinder knife sharpener comes in-it’s a quick and easy way to get your knives razor sharp. In this tutorial, we’ll show you how to use a bench grinder to sharpen your knives in just minutes. You’ll be able to sharpen any type of knife, from kitchen knives, claw knives to hunting knives. So if you’re looking for an easy way to get your knives razor sharp, give this tutorial a try! 

How to sharpen a knife using a bench grinder:

bench grinder knife sharpener

The process of sharpening a dull knife using a bench grinder is quick and easy.

Tools Required

Before you start, make sure that you have the following tools:

  1. Bench grinder
  2. Sharpening stones (or diamond files)
  3. Knife


Knives are sharpened with a bench grinder in order to get the edge sharp. There are a few simple steps that you need to follow in order to sharpen your harder knife the right way.

Step 1: Clean the Knife

Before you can sharpen a knife, you first need to clean it. This is especially important if the blade is rusty or covered in dirt and other debris. To clean the knife, first, turn it over so that the blade is facing down. Then, use a cloth or towel to soak up as much water as possible from the blade. Next, place the grinder on its lowest setting and slowly rotate the knife around its longitudinal axis while pressing down on it with your hand. Continue doing this until the blade is clean and shiny.

Step 2: Inspect the Number of Blades

To sharpen a knife using a bench grinder, you will need to inspect the number of blades that it has. Most bench grinders have between 1 and 3 blades, which will be able to sharpen most types of pocket knives. However, if you are trying to sharpen a sword or other type of knife that has multiple blades, you will need to get a grinder with more than 3 blades.

Before starting to sharpen your knife, make sure that the blade is properly lubricated. This can be done by spraying it with WD-40 or another lubricant. After lubing the blade, place it on the bench grinding wheel and start turning it in one direction. Hold the handle at an angle so that the double sided blade is perpendicular to the wheel and continue turning until your knife is sharpened to your desired degree.

Step 3: Sharpening the Knife

Now that you have inspected the number of blades and lubricated the blade, it is time to sharpen your knife. To do this, place the grinder on its highest setting and position the blade so that it is resting against one of the grinding wheels. Then, use a sharpening coarse stone or diamond wheel to start sharpening the single sided blade. Begin by stroking it in one direction for about 20 strokes and then switch to stroking it in another direction for about 10 strokes. Finally, finish up by honing (polishing) the edge with a honing rod or file.

Step 4: Test for Sharpness

It is important to ensure that the grinding wheel and blade of the knife are sharp. If they aren’t, the knife will not cut effectively and can even be dangerous. To check if your grinder is properly aligned and sharpened, you should hold the blade flat at a 45-degree angle and grind for 30 seconds. You can also check for any burrs or nicks in the blade by running your hand along it; these will affect how sharp knife edge is. Finally, remember to clean your grinder regularly to keep it working optimally!

Useful Tips:

Knife sharpener

There are a few helpful tips that can make the sharpening process a bit easier:

  1. Always use a lubricant when sharpening your knife. This will help to reduce friction and prevent damage to the blade or grinder.
  2. Hold the knife at an angle when grinding so that it is perpendicular to the wheel. Doing this will ensure even blade grit removal across the entire length of the blade.
  3. When honing, always keep in mind that you should only hone towards the tip of the blade; doing otherwise may result in damage to both ends of your knife edge.
  4. Avoid using a vice. Vice-gripping the blade can cause excessive pressure to be applied to the blade, which may lead to warping or even cracking of the edge.
  5. Allow the natural movement of the knife to sharpen it: The motion of the blade against the wheel will help to create a razor-sharp edge.
  6. Maintain the correct angle: if your grinder doesn’t have a setting for the angle of the blade, use the Rule of Thumb: if you can see your hand when holding the blade at a 30-degree angle to the grinding wheel, then you are sharpening too steeply.
  7. Apply moderate pressure. If you’re sharpening a knife with a serrated edge, hold the blade at an angle so that the teeth of the serration are touching the grinder wheel.
  8. Regulate the speed: too fast of a sharpening angle or grinding speed can result in blemishes, while too slow will dull the blade. Always start with a slightly slower speed and gradually increase as needed.
  9. Clean your tool regularly: If left uncleaned, dirty tools can cause the buildup of powder and lead oxide which can impair razor-sharpness.

Frequently Asked Questions

Which is better: a manual or an electric bench grinder knife sharpener?

Both manual and electric bench grinder knife sharpeners are good options. However, if you’re not experienced with using a manual grinder, then an electric one may be a better option for you. Electric Bench Grinders use diamond abrasive wheels to sharpen damaged knives quickly and easily while also controlling the depth of sharpening, which ensures that your blade is always razor-sharp. Manual Bench Grinders operate in a similar way, but they typically require more hands-on work since you have to hold the blade against a grinding wheel with knife holder as it operates . This might be preferred by some users who prefer greater control over their knife sharp process or those who want to save time because these machines can sharpen multiple blades at once.

What are the benefits of using a bench grinder knife sharpener?

Bench grinder knife sharpeners are an essential item for any kitchen that includes knives. They help to maintain the blade’s edge and make it easier to sharpen the blade yourself, which leads to a longer lifespan for your knife. Bench grinder sharpeners also come with multiple angles, so you can get a precise angle every time you sharpen your knife. This ensures that the blade is kept in its best condition and does not become dull over time due to improper sharpening techniques. Bench grinder knife sharpeners also have guides on how much pressure should be applied when sharpening your knife, which minimizes the risk of injuring yourself or damaging your property while sharpening.


Knives are always used, and whether it is for outdoor activities or home affairs, a sharp knife can make all the difference. The only thing that makes this process tougher is buying the correct tools. To help you out in crafting your dream knife repair at home, we have laid down the steps mentioned above step-by-step so that you don’t miss any detail. If there are any doubts regarding how to sharpen a garden knife using a bench grinder, just leave us a comment below and we will get back to you as soon as possible!

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *