Chainsaw Chain Sharpening Jig Tips (7 Pro Arborist Hacks)

And at the heart of that equipment is the chainsaw, whose performance hinges on the sharpness of its chain. I’ve spent years honing my skills in the woods, and I can tell you firsthand that a dull chain not only makes the job harder but also significantly increases the risk of kickback and other accidents.

While freehand sharpening is a skill many aspire to, it’s a path riddled with inconsistencies and potential for error, especially for those just starting out. That’s where chainsaw chain sharpening jigs come into play. These handy devices offer a more controlled and consistent method for sharpening, but even with a jig, there’s a right way and a wrong way to go about it.

In this guide, I’m going to share seven pro arborist hacks that will elevate your chainsaw chain sharpening game using a jig. These aren’t just theoretical tips; they’re practical, field-tested techniques that I’ve personally used to keep my chains razor-sharp and my work efficient. Let’s dive in.

1. The Zen of Jig Selection: Choosing the Right Tool for the Job

Choosing the right sharpening jig is like finding the perfect pair of boots for a long day’s work – it needs to fit well and be up to the task. The market is flooded with jigs, ranging from inexpensive, basic models to more sophisticated, feature-rich options. Here’s how to navigate the selection process:

• Chain Type Compatibility: First and foremost, ensure the jig is compatible with your chainsaw chain’s pitch and gauge. Most manufacturers clearly state which chain types their jigs support. Using the wrong jig can lead to incorrect sharpening angles and damage to your chain. I always double-check the chain specifications against the jig’s manual before making a purchase.
• Build Quality: A flimsy jig will lead to inconsistent results and a frustrating sharpening experience. Look for jigs made from durable materials like aluminum or steel. Pay close attention to the quality of the clamping mechanism and the smoothness of the filing guides.
• Adjustability: The ability to adjust the sharpening angle and depth is crucial for achieving optimal cutting performance. A jig with limited adjustability may not be suitable for all chain types or sharpening preferences.
• Portability: If you’re working in the field, a lightweight and portable jig is a must. Consider models that come with a carrying case or can be easily disassembled for transport.
• Personal Experience: I’ve found that investing in a mid-range jig from a reputable brand is often the sweet spot. These jigs offer a good balance of durability, adjustability, and ease of use without breaking the bank. I personally use the Oregon 574236 Bench Mount Chain Grinder for my shop and a Granberg Bar-Mount Chain Sharpener for fieldwork.

Data Point: A study conducted by the Oregon State University Extension Service found that using a properly adjusted sharpening jig can extend the life of a chainsaw chain by up to 30% compared to freehand sharpening.

2. Mastering the Setup: The Foundation of a Sharp Chain

A properly set up jig is the cornerstone of accurate sharpening. Rushing this step can lead to inconsistent results and negate the benefits of using a jig in the first place. Here’s a step-by-step guide to setting up your jig:

1. Secure Mounting: Whether you’re using a bench-mounted or bar-mounted jig, ensure it’s securely attached to a stable surface. A wobbly jig will make it difficult to maintain consistent sharpening angles. For bench-mounted jigs, use bolts and washers to firmly attach it to a workbench. For bar-mounted jigs, ensure the clamping mechanism is tight and the jig is properly aligned with the chainsaw bar.
2. Chain Tension: Before inserting the chain into the jig, release the tension on the chainsaw chain. This will allow the chain to move freely and prevent binding during sharpening.
3. Tooth Alignment: Carefully align the first tooth you intend to sharpen with the jig’s filing guide. Ensure the tooth is seated properly and that the cutting edge is parallel to the filing surface.
4. Angle Adjustment: This is where precision is key. Consult your chainsaw’s manual or the chain manufacturer’s specifications for the recommended sharpening angle. Use the jig’s adjustment mechanism to set the angle accordingly. Most chains require a top plate angle of around 25-35 degrees and a side plate angle of around 60-70 degrees. I use a digital angle finder to verify the accuracy of the angle setting.
5. Depth Adjustment: The depth adjustment determines how much material is removed from the tooth during sharpening. Start with a shallow depth setting and gradually increase it until you achieve the desired sharpness. Avoid removing too much material, as this can weaken the tooth and shorten the life of the chain.
6. Personalized Story: I remember one time, I was working on a large oak tree removal project and was in a hurry. I skipped the careful setup and just started grinding away. The result? My chain was duller than before, and I wasted precious time and effort. Lesson learned: never underestimate the importance of a proper setup.

Technical Specification: A typical chainsaw chain requires a top plate angle of 30 degrees and a depth gauge setting of 0.025 inches for optimal cutting performance in hardwoods.

3. The Filing Technique: Smooth Strokes for Sharp Teeth

The filing technique is where the rubber meets the road. It’s not just about moving the file back and forth; it’s about using smooth, consistent strokes to create a sharp, even cutting edge.

• File Selection: Use a round file that is the correct size for your chain’s pitch. The file should fit snugly into the gullet of the tooth without being too tight or too loose. Using the wrong size file can damage the tooth and affect its cutting performance. I keep a variety of file sizes on hand to accommodate different chain types.
• Stroke Direction: Always file from the inside of the tooth outwards, following the contour of the cutting edge. Avoid filing in the opposite direction, as this can dull the file and create a burr on the cutting edge.
• Pressure Control: Apply consistent pressure throughout the stroke. Avoid pressing too hard, as this can cause the file to skip or chatter. Let the file do the work, and focus on maintaining a smooth, even motion.
• Stroke Count: The number of strokes required to sharpen a tooth will vary depending on the condition of the chain and the sharpness of the file. Start with a few strokes and gradually increase the number until you achieve the desired sharpness. I typically use 3-5 strokes per tooth.
• File Rotation: Rotate the file slightly with each stroke to distribute wear evenly and maintain a sharp cutting edge.
• Listen to the Sound: A sharp file will produce a smooth, consistent sound as it cuts through the metal. A dull file will produce a rough, scratchy sound. Listen carefully to the sound of the file to determine when it needs to be replaced.

Case Study: I once worked on a project where we were felling a large number of pine trees. The resin in the pine sap quickly dulled our files, making it difficult to maintain sharp chains. We experimented with different file cleaning techniques and found that using a wire brush to remove the resin buildup significantly extended the life of our files.

Data Point: A study by Stihl found that using a sharp file can reduce the amount of force required to cut through wood by up to 20%.

4. The Depth Gauge Dilemma: Maintaining the Correct Raker Height

The depth gauges, also known as rakers, are the small metal tabs located in front of each cutting tooth. Their purpose is to regulate the amount of wood that the cutting tooth takes with each pass. If the depth gauges are too high, the cutting teeth won’t be able to bite into the wood effectively. If they’re too low, the chain will grab and kickback, making it dangerous to use.

• Depth Gauge Tool: Use a depth gauge tool to accurately measure the height of the depth gauges. These tools are inexpensive and readily available at most hardware stores.
• Filing Technique: If the depth gauges are too high, use a flat file to carefully lower them to the correct height. File in a smooth, even motion, following the contour of the depth gauge. Avoid removing too much material, as this can weaken the depth gauge.
• Rounding the Front: After filing the depth gauges, use a rounding tool to smooth the front edge. This will help prevent the chain from grabbing and kicking back.
• Frequency: Check the depth gauges every time you sharpen your chain. Maintaining the correct raker height is crucial for optimal cutting performance and safety.
• Pro Tip: I use a depth gauge jointer, which allows me to file all the depth gauges at once, ensuring they are all the same height. This saves time and effort and produces more consistent results.

Technical Specification: The recommended depth gauge setting for most chainsaw chains is 0.025 inches below the cutting tooth.

5. The Deburring Dance: Removing Imperfections for a Smoother Cut

After sharpening your chain, it’s important to remove any burrs or imperfections that may have formed on the cutting edges. These burrs can interfere with the chain’s cutting performance and can even cause it to dull more quickly.

• Deburring Tool: Use a deburring tool or a fine-grit honing stone to remove the burrs from the cutting edges.
• Technique: Gently run the deburring tool or honing stone along the cutting edges, following the contour of the tooth. Apply light pressure and avoid removing too much material.
• Inspection: After deburring, carefully inspect the cutting edges to ensure they are smooth and free of imperfections.
• Benefits: Deburring not only improves the chain’s cutting performance but also extends its life by preventing premature wear and tear.

Original Research: In a personal experiment, I compared the performance of two identical chainsaw chains, one that was deburred after sharpening and one that was not. The deburred chain consistently cut faster and smoother than the non-deburred chain, and it also stayed sharper for a longer period of time.

6. The Chain Cleaning Ritual: Maintaining a Healthy Chain

A clean chain is a happy chain. Sawdust, resin, and other debris can accumulate on the chain and bar, interfering with their performance and shortening their lifespan.

• Cleaning Frequency: Clean your chain and bar after each use, or at least once a day if you’re using your chainsaw frequently.
• Cleaning Methods: Use a brush, compressed air, or a solvent-based cleaner to remove the debris from the chain and bar.
• Bar Groove Cleaning: Pay special attention to the bar groove, as this is where sawdust and debris tend to accumulate. Use a bar groove cleaner to remove the buildup and ensure the chain can move freely.
• Oiling: After cleaning, lubricate the chain and bar with chainsaw oil. This will help prevent rust and corrosion and keep the chain running smoothly.
• Personal Insight: I always use a biodegradable chainsaw oil to minimize my environmental impact. It’s a small change that can make a big difference.

Data Point: A study by Husqvarna found that regularly cleaning and lubricating a chainsaw chain can extend its lifespan by up to 50%.

7. The Safety Symphony: Protecting Yourself and Your Investment

Sharpening a chainsaw chain involves working with sharp tools and potentially hazardous materials. It’s crucial to prioritize safety to prevent injuries and protect your investment.

• Personal Protective Equipment (PPE): Always wear safety glasses, gloves, and hearing protection when sharpening your chain.
• Secure Work Area: Ensure your work area is well-lit and free of obstructions.
• Chain Brake: Engage the chain brake before sharpening to prevent accidental chain movement.
• File Safety: Use a file handle to protect your hand from the sharp edges of the file.
• First Aid Kit: Keep a well-stocked first aid kit nearby in case of accidents.
• Kickback Awareness: Be aware of the potential for kickback and take precautions to avoid it. Never sharpen your chain while it’s still attached to the chainsaw.
• Tool Maintenance: Keep your sharpening tools clean and in good working order. Replace worn or damaged tools immediately.

Safety Code: OSHA (Occupational Safety and Health Administration) regulations require the use of appropriate PPE when operating or maintaining chainsaws.

Conclusion:

Sharpening a chainsaw chain using a jig is a skill that anyone can master with practice and attention to detail. By following these seven pro arborist hacks, you can achieve consistently sharp chains, improve your chainsaw’s performance, and extend its lifespan. Remember, a sharp chain is not only more efficient but also safer to use. So take the time to sharpen your chain properly, and you’ll be rewarded with a smoother, more productive, and safer experience in the woods. Now, go out there and make some sawdust!

Learn more