How To Sharpen A Chain Saw: Get Precise Cuts Every Time

A dull chain saw makes cutting wood difficult and dangerous. How do you sharpen a chain saw? You can sharpen a chain saw by using a file, a chainsaw blade sharpener (manual or electric), or by taking it to a professional. This chain saw sharpening guide will walk you through the process, step-by-step, so you can achieve precise cuts every time and extend the life of your tool. Keeping your chain saw sharp is crucial for both efficiency and safety.

Image Source: www.wikihow.com

Why Sharp Chainsaws Matter

A sharp chainsaw is more than just a convenience; it’s a necessity for safe and efficient work. A dull chain saw will vibrate more, require more force to cut, and can kickback unexpectedly, increasing the risk of accidents.

Safety First

Working with a dull chain saw forces you to apply more pressure. This can lead to loss of control and increase the chances of injury. A sharp chain saw bites into the wood easily, reducing strain and fatigue.

Increase Efficiency

A sharp blade cuts faster and more efficiently, saving you time and energy. You’ll use less fuel and put less wear and tear on your saw.

Save Money

Maintaining chainsaw sharpness reduces the need for costly repairs and replacements. A sharp chain cuts cleaner, reducing the risk of the chain binding and breaking.

Preparing to Sharpen Your Chain Saw

Before you begin, gather your chainsaw sharpening tools and prepare your workspace.

Gather Your Tools

You’ll need:

• A chain saw file (the correct file size for chainsaw chain is essential)
• A file guide (optional, but recommended for beginners)
• A depth gauge tool
• A flat file
• A vise or clamp to secure the chain saw
• Gloves
• Eye protection

Securing Your Chain Saw

Secure the chain saw in a vise or clamp to keep it steady. This will make sharpening easier and safer. If you don’t have a vise, you can use a stump vise or clamp the saw to a sturdy workbench.

Cleaning the Chain

Clean the chain with a brush and solvent to remove dirt and debris. This will help you see the cutting edges of the teeth more clearly.

Chain Saw Sharpening Guide: Step-by-Step

Follow these steps to sharpen your chain saw using a round file. This method is the most common and effective way to maintain your chain saw’s sharpness.

Identifying the Cutting Tooth

Each cutting tooth has two main parts: the top plate and the side plate. The cutting edge is where these two plates meet.

Determining the Correct File Size

The correct file size for chainsaw chain depends on the pitch of your chain. The pitch is the distance between any three consecutive rivets divided by two. Check your chain saw manual or the chain itself to find the correct file size. Refer to the table below for general guidance.

Chain Pitch	Recommended File Size
1/4″	5/32″ (4.0 mm)
.325″	3/16″ (4.8 mm)
3/8″	5/32″ (4.0 mm) or 7/32″ (5.5 mm)
.404″	7/32″ (5.5 mm)

Filing the Cutting Teeth

1. Position the File: Place the file in the tooth at the correct angle for sharpening chainsaw. The angle is usually marked on the file guide or in your chain saw manual. Typically, this angle is between 25 and 35 degrees.
2. File the Tooth: Use smooth, even strokes to file the tooth from the inside out. Apply pressure only on the forward stroke.
3. Count Your Strokes: Keep track of the number of strokes you use on each tooth to ensure consistency.
4. Check Your Progress: After a few strokes, check the cutting edge to see if it’s sharp. You should see a clean, shiny edge.
5. Repeat for All Teeth: Repeat steps 1-4 for all the cutting teeth on the chain, filing every other tooth on one side, then flipping the saw and repeating for the remaining teeth.

Understanding the Angle for Sharpening Chainsaw

The angle for sharpening chainsaw is critical for achieving optimal cutting performance. The top plate angle and the side plate angle both contribute to the cutting action. Consult your chain saw manual for the specific angles recommended for your chain.

Lowering the Depth Gauges (Rakers)

The depth gauges, also known as rakers, control how deeply the cutting teeth bite into the wood. As the teeth are sharpened, the depth gauges need to be lowered to maintain proper cutting action.

1. Use a Depth Gauge Tool: Place the depth gauge tool on top of the chain, aligning it with the depth gauge.
2. File the Depth Gauge: Use a flat file to file down any portion of the depth gauge that protrudes above the tool.
3. Round Off the Front: Round off the front of the depth gauge to prevent it from catching on the wood.
4. Repeat for All Gauges: Repeat steps 1-3 for all the depth gauges on the chain.

Using a Chainsaw Blade Sharpener

While hand filing is effective, a chainsaw blade sharpener can make the process faster and more precise. There are two main types of chainsaw sharpeners: manual and electric.

Manual Chainsaw Sharpeners

Manual chainsaw sharpeners use a hand crank or lever to move the chain and file. They are relatively inexpensive and easy to use.

• Pros: Affordable, portable, easy to use.
• Cons: Can be slower than electric sharpeners, require more physical effort.

Electric Chainsaw Sharpeners

Electric chainsaw sharpeners use a grinding wheel to sharpen the teeth. They are faster and more precise than manual sharpeners, but they are also more expensive.

• Pros: Fast, precise, less physical effort.
• Cons: More expensive, require a power source, can overheat the chain if used improperly.

Best Chainsaw Sharpener – Choosing the Right One

The best chainsaw sharpener depends on your needs and budget. Consider the following factors:

• Frequency of Use: If you sharpen your chain frequently, an electric sharpener may be worth the investment.
• Budget: Manual sharpeners are more affordable, while electric sharpeners can be quite costly.
• Ease of Use: Choose a sharpener that is easy to set up and operate.
• Precision: Look for a sharpener that allows you to adjust the sharpening angle and depth.

Sharpening with an Electric Sharpener: Step-by-Step

1. Secure the Sharpener: Mount the sharpener on a workbench or other stable surface.
2. Adjust the Angle: Set the sharpening angle according to your chain saw manual.
3. Position the Chain: Place the chain in the sharpener, aligning the cutting tooth with the grinding wheel.
4. Grind the Tooth: Gently lower the grinding wheel onto the tooth, using short, controlled bursts.
5. Repeat for All Teeth: Repeat steps 3-4 for all the cutting teeth on the chain, following the manufacturer’s instructions.

Maintaining Chainsaw Sharpness

Regular maintenance is key to keeping your chain saw sharp and operating efficiently.

Regular Cleaning

Clean the chain saw after each use to remove dirt, sap, and debris. Use a brush and solvent to clean the chain and bar.

Proper Lubrication

Keep the chain properly lubricated to reduce friction and wear. Use a high-quality chain saw oil and check the oil level frequently.

Inspecting for Damage

Inspect the chain regularly for damage, such as cracks, broken teeth, or loose rivets. Replace the chain if you find any damage.

Storing Your Chain Saw

Store your chain saw in a dry, clean place. Cover the bar and chain to protect them from dust and moisture.

Troubleshooting Common Issues

Here are some common issues you may encounter when sharpening your chain saw and how to resolve them:

• Chain cuts unevenly: This could be due to unevenly sharpened teeth. Make sure you’re using the same number of strokes on each tooth and maintaining the correct angle.
• Chain binds in the cut: This could be due to dull teeth or improperly lowered depth gauges. Sharpen the chain and check the depth gauge height.
• Chain vibrates excessively: This could be due to a loose chain or damaged components. Tighten the chain and inspect for damage.
• Chain smokes during cutting: This could be due to insufficient lubrication. Check the oil level and make sure the oiler is working properly.

Resources for Further Learning

• Chain saw manuals (Check your chain saw manufacturer’s website)
• Online tutorials and videos (YouTube is a great resource)
• Local hardware stores and equipment dealers (They often offer workshops)

Frequently Asked Questions (FAQ)

• What is the best way to sharpen a chain saw? The best way depends on your experience and tools. Hand filing is a good option for beginners, while electric sharpeners are faster and more precise.
• Can I use any file to sharpen my chain saw? No, you need to use a round file that is specifically designed for chain saw chains. The correct file size for chainsaw chain is important.
• How often should I sharpen my chain saw? You should sharpen your chain saw whenever it becomes dull or after every few hours of use.
• Who is qualified to sharpen my chain saw if I can’t do it myself? A qualified professional at a local hardware store, lawnmower repair shop, or chain saw dealer can sharpen your chain saw.
• What are the signs of a dull chain saw? Signs of a dull chain saw include slow cutting, excessive vibration, and the need to apply more pressure to cut through wood.
• Is it possible to over-sharpen a chain saw? Yes, over-sharpening can weaken the teeth and reduce the life of the chain. Be careful not to remove too much material.
• How do I know what angle to use when sharpening? Refer to your chain saw manual or the file guide for the recommended angle. The angle for sharpening chainsaw is critical.
• What are depth gauges, and why are they important? Depth gauges control how deeply the cutting teeth bite into the wood. They need to be lowered as the teeth are sharpened to maintain proper cutting action.
• What are the best chainsaw sharpening tools for a beginner? A chain saw file, a file guide, and a depth gauge tool are essential for beginners.
• How can I extend the life of my chain saw chain? Regular cleaning, proper lubrication, and proper sharpening are key to extending the life of your chain saw chain.

By following this chain saw sharpening guide, you can keep your chain saw in top condition and enjoy safe and efficient cutting for years to come. Maintaining chainsaw sharpness will not only improve the performance of your tool but also enhance your safety while working with it. Remember to always wear appropriate safety gear and consult your chain saw manual for specific instructions and recommendations.