My blades tend to sharpen themselves over time to thin sharp curved blades!
It must be that cement lawn edge that keeps them honed.
New blades always get a zip on the grinder wheel. I'm cutting grass not dirt so two sets of blades should last the life of the mower.
My Mustang is 30+ years old and is only on it's second blade set...
... as it only does a tennis court, grass path and a front lawn but it has done these over 800 times without an issue so far!
