In Reply to: Lawn mower baldes posted by David D. Smith on August 24, 2019 at 11:00:50:
It's not as if the blades are 100% tungsten carbide. Regular mild steel blades are just infused/coated with tungsten carbide to improve their durability. There's nothing complicated about sharpening them on a bench grinder.
Solid tungsten carbide is extremely brittle and would shatter the first time it hit a rock.