Circular Saw Blade Sharpening – 5 Things You Need To Consider For Sharpening The Blade


Circular saw blades are essential components in a wide range of industries. Nevertheless, many woodworkers and operators still experience issues when sharpening their saw blades.

You would likely find woodworkers who don’t know their needed tools or how to use them. 

This article presents five things you must consider for sharpening your circular saw blades. As you go through this article, you will learn how to keep the circular saw blades sharp and make them always operate at peak efficiency. Let’s get right into it!

Table of Contents

circular saw blade

circular saw blade

Section 2: Are the circular saw blades worth sharpening?

It is common to ask if circular blades are worth sharpening. The short and simple answer is yes!  It is because any rusty or dull circular saw blade would wear out easily and not cut effectively. It is recommended never to use a blade after it gets charred or blunt. 

operator sharpening saw blade

Operator sharpening saw blade.

2.1 Should we replace or sharpen the circular saw blade?

Sharpening a dull circular saw blade removes a greater portion of the cutting material. But sometimes, it is better to replace blades instead of sharpening them. 

Remember changing blades has to do with whether the blades are too weak or old for sharpening. Weak blades usually crack in the cutting process.

Hence, it is better to purchase new blades if the old one is weak. However, for blunt blades that are recent, you must sharpen them.

2.2 Are the circular saw blades worth sharpening?

Rusty circular saw blades give a rough finish. You must sharpen and clean the blades for a better and smoother finish. Furthermore, rusty circular saw blades offer more energy on cuttings.

With a sharpened circular saw blade, there would be less work done in cutting. The blades will have to replace less often. 

It is no news that there are different kinds of saws that use different kinds of circular saw blades.

They include circular miter saw blades, radial arm saw blades, table saw blades, panel saw blades, and cold saw blades. All of them are worth sharpening when blunt.

Section 3: When does the saw blade need sharpening?

Firstly, once you observe changing noise levels, you can tell that the tool is working too hard. Hence, this is telling you that you need to sharpen the blade.

Secondly, the rough surface of the material is a good sign that needs attention. It is important to carefully inspect your blade to ensure the best finishing to your material.

When a circular saw blade gets rusty, it is better to clean and sharpen the saw to remove the surface’s iron rust. Therefore, a blade is due for sharpening when it becomes rusty and dull.

In other words, if you notice an increase in the amount of input energy for cutting, then the blades are due for sharpening.  

Section 4: What do we consider before sharpening?

Before sharpening a circular saw blade, there are some main things to consider. You need advanced sharpening experience with circular saw blades to achieve the best results.

To avoid damaging the saw, use the circular blade sharpener and do it correctly. You must seek expert advice on sharpening circular saw blades to produce the best results.

Equipping yourself with tips for circular saw sharpening takes a lot of practice to make it flawless.

You should ask for professionals who have reliable sharpening facilities if you would like to learn how to sharpen circular saw blades with a grinder.

Also, when it comes to the blade’s quality, do not compromise. Try to spend your money on a quality saw blade as much as possible.

You will discover that weaker blades come at a lower price in most situations, but they do not retain a sharp edge and are not worth sharpening. It means you need to replace the blade regularly.

Section 5: How to sharpen the circular saw blade in the best way?

There are important steps you need to take when sharpening the saw blade. Hence, you must follow these steps.

5.1 Remove

For sharpening purposes, you need to remove the circular saw blade from the saw. It is an easy process. A blade release switch in most of the saws makes the task easier and faster. Other older versions need you to lose the bolts by using a wrench.

5.2 Secure

You can secure the saw blade by using a vice grip. Also, ensure that the vice grip is facing an upward direction. 

5.3 Make marks

Next, make chalk marking at the blade’s topmost point. It will help you know when you have completed the blade’s sharpening. 

5.4 Consider the bevels

Apply strokes to the slopes of the blades. 

5.5 Turn the blade

Go on turning the blade around the saw blade while sharpening all points. You will understand when the sharpening process is over, as you will return to the chalk mark.

Repeat the same thing on the other blade side. Be sure to also start with the topmost points with the beveled edge.

5.6 File the tips

Finally, complete the filing tips of the beveled tooth. Then, place the file between the top two teeth, flat against the points’ leading edge.

Run the file backward and forwards simultaneously across the front edge from the blade point’s tip. Repeat this procedure for all tips, and you will easily sharpen the blade in no time.

5.7 Install

Installing the blade back on the saw is an easy step. Completed by unlocking vice. Your blade is sharp and ready for work.

You can watch this video to learn more.

Section 6: How to clean the Circular Saw Blade Sharpening?

The first step you need to take is to remove any surface or loose debris from the saw blade. To do this, use compressed air to blow off the debris.

Next, thoroughly wipe down the tool with a clean and dry rag to eliminate any remaining debris. Using a pad to clean the saw’s metal surface.  


This article has provided useful information that you need on Circular Saw Blade Sharpening. Hence, as you look for tools to sharpen your blades, you must work with a trusted manufacturer.

NCCuttingtools can provide various cutting tools, sharpening tools, and customized services to suit your needs. Do well to contact us should you have any problem with your tools.

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