Hmmm ok through searching - trying to harden or welding onto the blades seems too risky - if you're an expert maybe viable but as I'd be winging it - just too much risk of cracking during use and shooting off a chunk. So I will rule those out.
That really only leaves finding a superior usable blade (perhaps having to cut back so it fits) hassle here is Ozito have a tricky centre hole system thats likely proprietry - so likely no go.
Or chopping the ends off the bar blade, drilling through to replace the length with swingback blades. Which oddly is likely the 'safest' option but perhaps one I'd be best off doing when this existing blade is completely borked and unable to be sharpened again.
So till then I suspect I'll just have to try and avoid even small twigs on her lawn and resharpen at a more obtuse angle when the wear allows it.
