1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)
    Caluwe - Passion for Fire and Water ( Pellet and Wood Hydronic and Space Heating)

Lawn Mower Blade Sharpning

Post in 'DIY and General non-hearth advice' started by itworks, Nov 27, 2008.

Thread Status:
Not open for further replies.
  1. itworks

    itworks New Member

    Joined:
    Jul 23, 2008
    Messages:
    206
    Loc:
    Southwestern CT
    I have a 3-year old mulching lawnmower and have never sharpened or replaced the blade. A new blade cost $25. I was hoping to save some $$'s by sharpening it myself. What is needed to do this? Is it worth doing? What is the process?

    Helpful Sponsor Ads!





  2. Hogwildz

    Hogwildz Minister of Fire

    Joined:
    Nov 3, 2006
    Messages:
    6,788
    Loc:
    Next to nuke plant Berwick, PA.
    angle grind, or bench grinder, best is stand up belt sander.
    I do mine for the riding mower. Sorry to say, I don't balance them. I try to take as many swipes on each side to keep unbalancing to a minimum.
  3. d.n.f.

    d.n.f. New Member

    Joined:
    Dec 14, 2007
    Messages:
    504
    Loc:
    Nelson BC
    orrrrrrrr a file.

    File works fine. Medium and then fine.

    Easier to balance the blade.
  4. DiscoInferno

    DiscoInferno Minister of Fire

    Joined:
    Nov 7, 2006
    Messages:
    1,327
    Loc:
    Silver Spring, MD/ Munising, MI
    I bought a $10 angle grinder from Northern Tools for mine. I had to take a lot of metal off (had never sharpened in around 8 years) and it never even occurred to me to try to balance it. Works great.
  5. Highbeam

    Highbeam Minister of Fire

    Joined:
    Dec 28, 2006
    Messages:
    8,991
    Loc:
    base of Mt. Rainier on the wet side, WA
    I balance my blades after sharpening by sticking a screwdriver through the center and noting which end of the blade is heavier as the end that falls. Shop around for blades since my JD mower's blades were only 12$ from JD. If they are not too chipped then you can file them, a little worse and then they come off for the bench grinder.

    My brush hog blades are 4" wide and a half inch thick. Those puppies get the 4.5" disc grinder and they stay on the mower. On the hog blades you aren't going for sharp as much as you are trying to take off the big peaks of deformed steel. New ones are pretty sharp though just in case you are mowing your lawn with it.
Thread Status:
Not open for further replies.

Share This Page