Yes, you can. If the lawn edger you own has blades that have become dull, you don’t have to take them to a profession or throw away the tool; you can save money and sharpen the blades yourself. 1. Check the owner’s manual: Don’t start sharpening anything until you find out if there are any quirky things you need to know first. There could be a safety hazard if you start pulling it apart or moving parts around. 2. Clean the blades: This should be something you do after every use. But, make sure those blades are clean and clear before applying any sharpening tool to them. 3. Choose a sharpening tool: To sharpen blades, you can use an electric grinder, an angle grinder, or a sharpening file. If you need more information on how to sharpen a gardening tool, watch this video or search online for your specific model. 4. Safety is first: Don’t forget to wear safety goggles, gloves, and whatever other safety gear you think is necessary. There is no reason to risk an injury. 5. Remember to only sharpen the blades, not reshape them: Lawn Edgers and Trimmers have beveled blades for a reason. Don’t grind them so hard and long that they no longer have their original shape. 6. Buy a new blade: If you have sharpened the blades on your lawn edger but don’t see any improvement in performance, it may be time to get a new blade.