How to Sharpen Circular Saw Blade

Have you observed the differences between a sharpened knife and a blunt knife? Well, I am pretty sure you have.

You can work faster with a sharpened knife as it has sharp edges that help you to cut things easily and efficiently. Whereas with a blunt knife, you will face a little difficulty while cutting stuffs.

It is the same for circular saw blades. You need to sharpen them regularly.

Lucky for you, we are going to discuss the process in this post. Don’t get bothered with your blunt circular saw blade, wait here until the article is finished and soon you will know how to sharpen a circular saw blade at home!

Trending Circular Saw Blade in 2019

Freud D12100X Diablo Ultra Fine Circular Saw Blade

  • 100 teeth 12-inch blade
  • Ultra-thin kerf design
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  • Carbide tipped blade

Why We Need to Sharpen the Blade

First of all, you don’t want to work with blunt blades. However, changing the blades will cost you a lot of money.

So why not just sharpen the blades and renew them?

As a result, blades will work more efficiently.

It is not just the thing that you have bought the best performed circular saw and it will give you ultimately what you need. The performance of a circular saw mostly depends on it’s acute blade.

Now, let’s jump into the process of sharpening the blade.

How to Sharpen A Circular Saw Blade By Hand

Easiest Steps to Follow

Here, I will detail the entire process of sharpening a circular saw blade step-by-step.

Step 1

At first, you want to make sure that the battery is disconnected or at least the device is unplugged. Otherwise, it may lead to an accident which can be harmful for both you and the device.

Step 2

Majority of the devices have a wrench built into them to help you unfasten the bolts securing the blade. You shouldn’t have much difficulties in unfastening the bolts.

Step 3

After removing the blade, you need to take a grease pencil and mark the blade at the point where you are going to start. You can then secure it in a vice. Make sure that the vice is clamping down on the face and that you don’t have any of the teeth inside.

Step 4

Use a file like the triangular shaped ones for sharpening. The teeth are angled at about 20 degrees. That’s why you need to begin with the marked one.

Step 5

Match the angle and run the file in zig-zag fashion 4 times. Next, skip a tooth. Repeat the process and proceed all the way around the blade.

Step 6

When you are ready to do the other ones, pick the one next to the mark up. So, by turning the blade around, you can keep the same angle and the same pressure.  “Step 2” will be repeated again here. After that, just lightly go over the top.

Step 7

Now, you have to put a little bit of pressure because most of these blades are using carbide tip blades which are very strong. However, they stay sharp for a long time.

Step 8

Do about 4 strokes on the side and a few strokes on the top. This will sharpen the points and give you a real sharp blade.


That’s about all you can know about sharpening a circular saw blade. Yes! It’s easy as you read!

If you come across any problem while doing this, let me know in the comments section. I would be glad to help you.


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