I happen to see a video of Tim the Tractor Time Guy showing the John Deere Self-Sharpening mower blades. At first I thought this was a joke... and it very well may be a joke. I cannot find anywhere where John Deere makes or sells a self-sharpening mower blade. Number two. I don't see how, why, and what way a mower deck blade can sharpening itself. But, I'm willing to learn and believe it when I see it.
Tim the Tractor Time guy always making videos of what he can do to make a few bucks on some of his many John Deere equipment and some make sense.
So, those here that have or use these self-sharpening blades....speak up.