How often can you safely resharpen a lawnmower blade?
Logic316 ~good guys wear black♠ asked:
I sharpen the edges of the blade on my push mower each year, and I’ve done it 4 times so far. I’m just afraid that after several sharpenings the blade might someday get weak and perhaps break while the motor’s spinning and cause a serious accident, so how do you tell when it’s time to change the blade for a brand new one?
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I sharpen the edges of the blade on my push mower each year, and I’ve done it 4 times so far. I’m just afraid that after several sharpenings the blade might someday get weak and perhaps break while the motor’s spinning and cause a serious accident, so how do you tell when it’s time to change the blade for a brand new one?
May 20th, 2009 at 9:15 pm
Blades are cheap why risk it? Do you balance the blade when you sharpen? Balancing is important, an unbalanced
blade can destroy engine bearings and bend crankshafts.
You can purchase a balancer for less than $5.
When my Dad ran his mower shop we usually would recommend a new blade when the tip was reduced by about 1/2 - 3/4 of an inch. This was for safety reasons, we made more money sharpening blades than selling new ones.
May 21st, 2009 at 4:08 pm
I sharpened the blades on my old MTD mower every year for 22 yrs. without any problem. 4 times is nothing, you haven’t even taken enough off of the blade to make it show.
May 22nd, 2009 at 1:22 pm
Replace the blade at any sigh of damage: rust nick bend, etc. Make sure you balance the blade each time you sharpen it. Do this by hanging it on a nail, it should stay horisontal without tiping to either side.