![]() ![]() A thinly sharpened, super-sharp blade is easier to get nicked and becomes dull much faster.’ 6. ‘The idea is to remove any nicks, burrs, or rough spots along the top and bottom of the blade edge without making the blade come to a sharp pointy edge. ‘The best and easiest way to sharpen lawnmower blades is by using an angle grinder and a flap disk or by using a drill-powered blade sharpener,’ says Eric De Boer. This can be the best way to sharpen lawnmower blades provided you have experience and wear protective clothing. Sharpen a lawnmower blade with a machineĪs an alternative to sharpening a lawnmower blade by hand, you can use a machine or attachment for your power tools. ‘Run the file across the mower blade in one direction at the same angle as the original cutting blade angle, using enough pressure to remove nicks and burrs,’ says Eric De Boer. Clamp it in a vise to hold it securely first. Whichever you choose, a blade should be made ‘butter-knife’ sharp.Ī lawnmower blade can be sharpened by hand using a 10in mill bastard file. There is a choice of ways to sharpen a lawnmower blade. ‘Once the blade is removed, check to make sure that it is not cracked or bent, in which case it would be better to replace it,’ says Eric. ‘You should always use protective gloves when working with sharp objects,’ says Andrew Porwol, owner of Garden Centre Shopping.īefore doing anything else, take a good look at the blade. ‘If it’s been a while since you’ve removed the blade, some WD-40 or other lubricant may be helpful to break the bolt free that holds your blade in place,’ says Eric.Ĭheck the manufacturer’s instructions on removing the blade – generally you will just need to loosen a bolt or a nut using a wrench. ‘Injuries can happen to exposed skin or eyes from sharpening tools or the mower blade itself.’ ‘An important safety tool can be a block of wood to place under your mower deck between the deck and blade to prohibit the blade from spinning as you are removing it for sharpening,‘ says Eric De Boer. Take further precautions to prevent injury. ‘If you reinstall the blade upside-down, it won’t be able to cut grass properly.’ ‘Make sure to mark the bottom side of your mower blade before removing it,’ says Toby Schulz of. Tip the mower onto its side, air filter and carburetor side upwards. ‘In the case of a battery powered machine the battery should be removed.’ As should any safety keys. ‘Before attempting to remove the blade, the spark plug should be removed to avoid the risk of the machine accidentally starting,’ say the experts at Mowers Online. There’s another task to perform to prevent accidents. Wear long sleeves and cover your legs for the same reasons. ‘A sturdy pair of gloves, and eye and/or ear protection are necessary to avoid getting cut or burned by sparks when sharpening,’ says turfgrass and horticulture science specialist Eric De Boer PhD of Simple Lawn Solutions. It is vital to work safely when sharpening lawnmower blade. You could get a pro to do the job, but DIYing can work just fine, so long as you follow the rules on safety and have the right tooks. An unsharpened blade can even harm your grass and expose it to infection and fungal growth.’ Grass can appear frayed and damaged and ruin your aesthetic. ‘Dull blades can result in a patchy job with an uneven height. ![]()
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