Mower Blades


Old 10-20-02, 08:46 PM
Thread Starter
Join Date: May 2002
Posts: 200
Mower Blades

When using a file to sharpen a blade do you file the top and bottom of the blade. Seems like i can never get a blade sharp by just filing the angle side. My brother told me filing both sides will ruin the blade,is that true?
Sponsored Links
Old 10-20-02, 10:48 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,821
Hello romod!

Anytime you sharpen a lawnmower blade, you want to duplicate the original angle. This would normally be about a 45 degree angle on the top side of the blade.
Old 10-28-02, 06:12 PM
Visiting Guest
Posts: n/a
Sharp blades

Blades are sharpened on one side at approx. 35 - 45 degrees. Also the blades sould not be razor sharper but slightly blunted. This will extend the life of the blade and prevent serious damage if you bounce a rock or 2 around them.
Old 10-28-02, 06:49 PM
Sharp Advice's Avatar
Admin Emeritus
Join Date: Feb 1998
Location: The Shake and Bake State USA
Posts: 10,440
Hello: romod

Excellent advice offered by both cheese and Luke.
Never sharpen both side of the blade.

If you have a common table top belt sander, an 80 or 100 grit belt, try sharpening the blade on the belt sander. It's faster and does a better job with a little practice.

Once you master this method, hand sharpening by file will become a method of the past. No requirement to hone the sharpened edge for home useage when done by a do-it-yourself person. Grass does not care, only customers do...

After any method of sharpening, be sure to balance the blade. Several methods can be located in prior postings in my sharpening topic below this topic.

Failure to balance the blade after a sharpening not only causes uneven cutting and vibrations, but will ruin the engines crankshaft seal. Once the seal is damaged the engine will leak oil.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes