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How To Sharpen Hedge Trimmers

How to sharpen hedge trimmers featured image.

Learning how to sharpen hedge trimmers can be overwhelming.

This post explores 3 ways to do exactly this.

Sharpening your own hedge trimmers is a valuable skill for any homeowner to learn. If your blades become dull, they will start to tear and rip at your hedges instead of cutting them smoothly. This will make your work harder than it needs to be as well as give you sub-par results. You should consider sharpening your blades at the first sign of wear to keep your hedge trimmers working their best. Below we’ve listed 3 ways to sharpen your hedge trimmers.

Sharpening with a File

The first thing you will need to do is align the blades. Don thick gloves as well as protective eyewear to make sure you do not injure yourself. Press the blades together into a tight fit. If your blades are loose, a screwdriver can be used to tighten the blades if need be. Sometimes, blades aren’t actually dull at all but have simply become a bit loose.

Second, you will need to use a mill or similar file to sharpen the blades. Go along the edge of the tooth in a downward motion in the direction of the cutting edge. Check the owner’s manual to find out the direction of the cutting edge.

Never go back and forth when sharpening your blades.

Be sure to lift the file up off of the blade before pulling it back up. If you do go back and forth, you are more likely to end up with a dull blade that is too thin.

While filing, be sure not to file away more than is necessary. Doing so may weaken your blade to the point that it needs to be replaced. It is also important to use consistent force while filing. Otherwise, you will end up with blades of different lengths, which will impact the performance of your hedge trimmer.

Finally, you will want to remove the burr created on the bottom of the blade by the sharpening. This is best achieved by using a sharpening stone. Remove any “swarf,” or fine chips and metal shavings created by the filing process. It is a great idea to spray your blades with a resin-free spray that will help keep it from getting rusty.

Sharpening with a Power Grinder

With this option, protective gear is even more important because the grinder will create sparks. Also, keep in mind the flammability of the clothing you are wearing. Using a power grinder is a very effective way to sharpen your blade, but it is also a dangerous one. Keep some water nearby in case of a fire.

The first step with this method is to secure the blades in a tight clamp. It is possible you will need to make adjustments during the sharpening process to get to all of the blades. Be sure that the blades are completely stationary while using the power grinder.

The second step is to use a 60 or 80 grinding wheel to sharpen your blades. You will want to go down the same angle as the blade. Sharpen each tooth edge one at a time. Always grind away from your body.

You will also want to hold the sharp edge of your blades away from your body.

You will want to apply light pressure in order to get your sharp edge without grinding away too much of your blade. Shorts strokes are more effective for getting an evenly sharpened blade. It will be necessary to repeat this process over and over until you have gotten every cutting side of every tooth. Again, it will probably be necessary to move and re-clamp the blades during this process.

Take Your Blades to a Specialist

At the end of the day, if you are not comfortable using either of those methods to sharpen your own blade, there is no shame in leaving it in the hands of a professional.

” They will be able to guarantee they have sharpened your blades to the optimum level.

It is also a great way to make sure you do not have too much of your blade removed during the process.

Final Thoughts On Sharpening Hedge Trimmers

Your hedge trimmer will only be effective if it has sharp blades. Any of the above options can be successful if done correctly. Once your blades are sharp again, you can go back to quickly and easily landscaping your own lawn.

For more tips on sharpening hedge trimmers yourself check out this post.

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