08:29PM | 04/20/05
Member Since: 04/19/05
8 lifetime posts
how do you sharpen a lawn mower blade (mulcher)?


Jim D

11:58PM | 04/20/05
Member Since: 01/06/01
342 lifetime posts
Boilinfrog - hi, when I've had my blades sharpened at the local shops, they use a bench grinder with a fine grit stone wheel. They hold the blade so that the sharp edge faces the same direction as the rotation of the wheel. That is, if the wheel is rotating counterclockwise when you look at it from the side of the grinder it's mounted on, the wheel is spinning down towards the floor - so the sharp edge of the blade faces down towards the floor.

If you have one of those mulcher blades where the main blade is split in from each end to create the mulcher portion, then you may have to use a Dremel tool with a fine grit stone bit to get into that small area. You still want the wheel spinning in the same direction as the sharp edge of the blade. If you have a blade that's bent/curved so the mulching part is still along the same outer edge - it can all be done via the grinder.

Either way - if you're sharpening your own blades, remember to check the balance of the blade afterwards. If you take too much metal off one side or the other, you'll make the blade unbalanced and when it's back on the mower, you'll soon be able to tell something's wrong. (Especially if it's a push mower - your arms will get real sore as you fight it!) One shop that did my blades in the past would re-balance the blades by taking a little metal off along the back edge of the blade, opposite the "light side" of the blade, using the grinder.

For me, it's been much easier to simply find a hardware store or lawn/garden supply store that can do this and take my blades to them. (They'll charge different prices so you may want to call around a bit first and get estimates based on the size/type of blades.) Because they can't always do the blades while you wait, I always invest in a spare set of blades and keep the spare set sharpened. It's easy to swap them out and be able to continue mowing while the other set get sharpened. I hope this helps - regards! Jim D/West Point, VA
Click to reply button
Inspiration banner


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button


Post new button or Login button

To test the boundaries of small-footprint living, interior designer Jessica Helgerson moved her family to a 540-square-foo... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled mudroom will get you in the outdoor mood. Grab your coat ... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR tiles are an affordable way to customize a carpeted floor covering for any space. Make anything from runners to wall-... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... Dark wood shelving and a matching upholstered bench keep this closet sleek and refined. The large window brightens the sub...
Follow banner a
Newsletter icon Flipboard glossy Facebook Twitter Pinterest Youtube Rss icon