07/22/2026
Most mower blades that get tossed for being "worn out" aren't worn out. They're sharpened wrong.
Three things do the damage: changing the angle instead of matching the factory bevel (30 to 35 degrees), grinding the steel so hot it turns blue and loses its temper, and skipping balance so the blade shakes the deck and chews up your spindle bearings.
We put the whole thing in one guide: the right angle, how to keep from cooking the steel, and how to balance a blade after. Sharp blades also burn up to 22% less fuel per acre than dull ones.
Click on the link below to read it.
What are you sharpening on, a bench grinder, an angle grinder, or a dedicated blade grinder?
How sharp a mower blade should be, the right sharpening angle, why overheating ruins the steel, and how to balance it after. The precision most crews skip.