20 Inch Corded Electric Chainsaw (5 Pro Tips for Heavy Cuts)
One of the often-overlooked advantages of using a corded electric chainsaw, especially a 20-inch model, is how incredibly easy they are to clean compared to their gas-powered counterparts. There’s no messy fuel or oil residue to contend with, making maintenance a breeze.
Mastering Heavy Cuts with Your 20-Inch Corded Electric Chainsaw: 5 Pro Tips
While gas-powered chainsaws often steal the spotlight for their raw power and portability, corded electric chainsaws have carved out a significant niche, especially in residential settings. They offer a compelling blend of power, convenience, and environmental friendliness. A 20-inch corded electric chainsaw can handle surprisingly heavy cuts, but only if you know how to optimize its performance.
1. Understanding Your Chainsaw’s Limitations & Capabilities
Before tackling any heavy cutting project, it’s crucial to understand the limitations and capabilities of your 20-inch corded electric chainsaw. These tools are generally designed for medium-duty tasks, such as felling small trees, limbing, bucking firewood, and storm cleanup.
Power Considerations: Amps and Voltage
The power of an electric chainsaw is typically measured in amps. A 20-inch corded electric chainsaw will usually draw between 12 and 15 amps. The voltage is almost always 120V in North America.
- Amperage Draw: A higher amperage draw generally translates to more cutting power. However, it also means you’ll need a robust extension cord and a circuit that can handle the load without tripping.
- Voltage Drop: Long or undersized extension cords can cause a voltage drop, which reduces the chainsaw’s power and can even damage the motor over time. Always use a heavy-duty extension cord that is rated for outdoor use and the amperage of your chainsaw.
Bar Length and Cutting Capacity
The 20-inch bar length indicates the maximum diameter of wood you can theoretically cut in one pass. However, it’s best to avoid pushing the chainsaw to its absolute limit. For optimal performance and longevity, I recommend sticking to cuts that are no more than about 16-18 inches in diameter. This allows the chainsaw to maintain a consistent cutting speed without overheating.
Wood Density: A Key Factor
The type of wood you’re cutting significantly impacts the chainsaw’s performance. Hardwoods like oak, maple, and hickory require more power than softwoods like pine, fir, and cedar. When cutting hardwoods, it’s essential to use a sharp chain and maintain a slow, steady cutting speed.
Case Study: My Oak Firewood Project
I once took on a project of cutting down a fallen oak tree into firewood. The oak was about 18 inches in diameter at the base, and I used my 20-inch corded electric chainsaw. While the chainsaw could handle the cuts, it was noticeably slower than when I’m cutting pine or fir. I had to be extra patient and let the chainsaw do the work, avoiding forcing it through the wood. This experience reinforced the importance of understanding the limitations of the tool and adjusting my technique accordingly.
2. Chain Sharpness: The Cornerstone of Efficient Cutting
The sharpness of the chain is arguably the most critical factor in determining the cutting performance of any chainsaw, but especially a corded electric model. A dull chain not only slows down the cutting process but also puts excessive strain on the motor, leading to overheating and premature wear.
The Science of Chain Sharpness
A chainsaw chain consists of numerous cutting teeth, each designed to shear off small chips of wood as it moves around the bar. When the teeth are sharp, they efficiently slice through the wood fibers with minimal resistance. However, when the teeth become dull, they tend to tear and grind the wood, requiring significantly more force to achieve the same result.
Recognizing a Dull Chain
Here are some telltale signs that your chainsaw chain needs sharpening:
- Increased Cutting Time: The chainsaw takes longer to cut through wood than it used to.
- Fine Sawdust: A sharp chain produces larger, more distinct chips of wood. A dull chain produces fine sawdust.
- Smoking: A dull chain generates excessive friction, causing the wood to smoke, even when the chain oiler is working correctly.
- Bouncing or Kickback: A dull chain is more likely to bounce or kick back, increasing the risk of injury.
- Uneven Cutting: The chainsaw cuts at an angle or wanders off course.
Sharpening Techniques: File vs. Grinder
There are two primary methods for sharpening a chainsaw chain: using a file or using a chain grinder.
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File Sharpening: This is a manual method that involves using a round file and a flat file to restore the cutting edges of the teeth. It’s a relatively inexpensive and portable method that can be done in the field. However, it requires practice and skill to achieve consistent results. I personally prefer using a file for touch-ups and minor sharpening.
- Technique: Use a round file that matches the pitch of your chain (usually 5/32″ or 3/16″ for a 20-inch chainsaw). Hold the file at the correct angle (typically 25-30 degrees) and file each tooth with smooth, even strokes. Make sure to file all the teeth to the same length. Use a flat file to lower the depth gauges (rakers) as needed.
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Chain Grinder: This is a power tool that uses a grinding wheel to sharpen the teeth. It’s faster and more precise than file sharpening, but it requires an initial investment in the grinder. I use a chain grinder for more extensive sharpening and when I need to restore a heavily damaged chain.
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Technique: Follow the manufacturer’s instructions for your specific chain grinder. Set the correct angle and depth for your chain, and carefully grind each tooth, ensuring that you remove the same amount of material from each tooth.
Maintaining Chain Sharpness: Best Practices
- Regular Sharpening: Sharpen your chain regularly, even if it doesn’t appear to be dull. A few quick strokes with a file after each tank of fuel (or after every hour of use for an electric chainsaw) can significantly extend the life of your chain and improve cutting performance.
- Clean Your Chain: Keep your chain clean by removing dirt, debris, and sap. Use a wire brush or a solvent to clean the chain regularly.
- Proper Chain Tension: Maintain the correct chain tension to prevent the chain from derailing or binding.
- Avoid Cutting Dirty Wood: Avoid cutting wood that is covered in dirt, sand, or rocks, as these materials will quickly dull the chain.
3. Optimizing Cutting Techniques: Let the Chainsaw Do the Work
Even with a sharp chain, proper cutting techniques are essential for maximizing the performance of your 20-inch corded electric chainsaw. The key is to let the chainsaw do the work, avoiding forcing it through the wood.
Felling Techniques: Notching and Back Cuts
When felling a tree, it’s crucial to use proper notching and back cutting techniques to control the direction of the fall and prevent kickback.
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Notching: The notch is a wedge-shaped cut that is made on the side of the tree in the direction you want it to fall. The notch should be about one-third of the tree’s diameter. There are two common types of notches: the open-face notch and the traditional notch.
- Open-Face Notch: This notch is easier to create and provides better control over the direction of the fall. It consists of two cuts: a horizontal cut and an angled cut that meet at a point.
- Traditional Notch: This notch consists of a horizontal cut and an angled cut that meet at a 45-degree angle.
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Back Cut: The back cut is made on the opposite side of the tree from the notch. It should be slightly higher than the notch and should leave a hinge of uncut wood. The hinge controls the direction of the fall and prevents the tree from falling backward.
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Important Safety Note: Never cut completely through the tree. Always leave a hinge of uncut wood.
Bucking Techniques: Preventing Pinching
When bucking logs into firewood, it’s essential to use techniques that prevent the chainsaw from pinching or binding. Pinching occurs when the weight of the log closes the cut, trapping the chainsaw bar.
- Cutting from the Top: If the log is supported on both ends, cut about one-third of the way through from the top, then roll the log over and finish the cut from the bottom.
- Cutting from the Bottom: If the log is supported in the middle, cut about one-third of the way through from the bottom, then finish the cut from the top.
- Using Wedges: If the log is likely to pinch, use wedges to keep the cut open. Insert the wedges into the cut as you progress, preventing the log from closing.
Limbing Techniques: Working Safely
Limbing involves removing branches from a felled tree. It’s a dangerous task that requires careful attention to safety.
- Work from the Base to the Tip: Start at the base of the tree and work your way towards the tip. This allows you to work in a more controlled manner and avoid being trapped by falling branches.
- Cut on the Opposite Side: When cutting a branch, stand on the opposite side of the tree from the branch. This will protect you from being hit by the falling branch.
- Use a Sawhorse: If possible, use a sawhorse to support the branches while you cut them. This will make the task easier and safer.
Personal Experience: The Importance of Proper Technique
I once tried to fell a small tree without using a proper notch. The tree fell in an unexpected direction, narrowly missing my truck. This experience taught me the importance of taking the time to learn and use proper felling techniques. It’s not worth risking your safety or damaging your property to save a few minutes.
4. Chain and Bar Maintenance: Extending the Life of Your Equipment
Proper chain and bar maintenance is crucial for extending the life of your 20-inch corded electric chainsaw and ensuring optimal performance.
Chain Lubrication: Preventing Friction and Wear
The chainsaw chain needs constant lubrication to prevent friction and wear. The chain oiler automatically dispenses oil onto the chain as it rotates around the bar.
- Check the Oil Level Regularly: Check the oil level in the reservoir before each use and refill as needed.
- Use the Correct Oil: Use a high-quality chain oil that is specifically designed for chainsaws. Avoid using motor oil or other types of oil, as they may not provide adequate lubrication and can damage the chain and bar.
- Adjust the Oil Flow: Some chainsaws allow you to adjust the oil flow rate. Increase the oil flow when cutting hardwoods or when working in hot weather.
Bar Maintenance: Preventing Wear and Damage
The chainsaw bar is the metal guide that supports the chain. It’s subject to wear and damage from friction and heat.
- Clean the Bar Regularly: Clean the bar regularly by removing dirt, debris, and sap. Use a wire brush or a solvent to clean the bar.
- Check the Bar for Wear: Check the bar for wear, such as burrs, grooves, or unevenness. If the bar is worn, it may need to be replaced or dressed with a bar dressing tool.
- Flip the Bar Regularly: Flip the bar over regularly to distribute wear evenly.
- Grease the Sprocket: Some chainsaw bars have a sprocket at the tip that needs to be greased regularly. Use a grease gun to apply grease to the sprocket.
Chain Tension: Ensuring Proper Fit
Proper chain tension is essential for preventing the chain from derailing or binding.
- Check the Chain Tension Regularly: Check the chain tension before each use and adjust as needed.
- Adjust the Chain Tension: To adjust the chain tension, loosen the bar nuts and turn the tensioning screw until the chain is snug against the bar. The chain should be able to be pulled away from the bar slightly, but it should not sag.
- Tighten the Bar Nuts: Once you have adjusted the chain tension, tighten the bar nuts securely.
5. Power Cord Management: Safety and Efficiency
Corded electric chainsaws require careful power cord management to ensure safety and efficiency.
Choosing the Right Extension Cord
Using the correct extension cord is crucial for preventing voltage drop and ensuring that your chainsaw receives adequate power.
- Heavy-Duty Cord: Use a heavy-duty extension cord that is rated for outdoor use and the amperage of your chainsaw.
- Shortest Possible Length: Use the shortest possible length of extension cord to minimize voltage drop.
- Proper Gauge: The gauge of the extension cord refers to the thickness of the wires. A lower gauge number indicates a thicker wire, which can carry more current. For a 20-inch corded electric chainsaw, I recommend using a 12-gauge or 10-gauge extension cord.
Preventing Cord Damage
Protecting your extension cord from damage is essential for preventing electrical hazards.
- Avoid Running Over the Cord: Avoid running over the cord with the chainsaw or other equipment.
- Keep the Cord Away from the Cutting Area: Keep the cord away from the cutting area to prevent it from being cut by the chainsaw.
- Use a Cord Reel: Use a cord reel to keep the cord organized and prevent it from tangling.
- Inspect the Cord Regularly: Inspect the cord regularly for damage, such as cuts, cracks, or exposed wires. If the cord is damaged, replace it immediately.
Safe Cord Management Practices
Following safe cord management practices is essential for preventing electrical shocks and other hazards.
- Use a Ground Fault Circuit Interrupter (GFCI): Use a GFCI outlet or extension cord to protect yourself from electrical shocks.
- Keep the Cord Dry: Keep the cord dry to prevent electrical shocks.
- Unplug the Cord When Not in Use: Unplug the cord when you are not using the chainsaw.
- Never Pull the Cord to Unplug It: Never pull the cord to unplug it. Always grasp the plug and pull it out of the outlet.
Conclusion: Maximizing Your 20-Inch Corded Electric Chainsaw’s Potential
By understanding the limitations and capabilities of your 20-inch corded electric chainsaw, maintaining a sharp chain, optimizing your cutting techniques, practicing proper chain and bar maintenance, and implementing safe power cord management practices, you can significantly enhance its performance and longevity.
Remember, a 20-inch corded electric chainsaw is a valuable tool for a variety of cutting tasks around the home and garden. By following these pro tips, you can tackle heavy cuts with confidence and efficiency.
Key Takeaways:
- Chain Sharpness is Paramount: A sharp chain is the key to efficient cutting and preventing motor strain.
- Technique Matters: Proper cutting techniques can significantly improve performance and reduce the risk of kickback.
- Maintenance is Essential: Regular chain and bar maintenance will extend the life of your chainsaw.
- Safety First: Always prioritize safety when operating a chainsaw.
- Know Your Limits: Understand the limitations of your chainsaw and avoid pushing it beyond its capabilities.
Next Steps:
- Inspect your chainsaw chain and sharpen it if necessary.
- Review your cutting techniques and practice proper felling and bucking methods.
- Develop a regular chain and bar maintenance schedule.
- Invest in a heavy-duty extension cord and a cord reel.
- Always wear appropriate safety gear, including eye protection, hearing protection, and gloves.
With these tips and a little practice, you’ll be well on your way to mastering heavy cuts with your 20-inch corded electric chainsaw. Happy cutting!
