Now that is a tool I can understand, that I like, would definitely use it for plane irons, and best of all, could make one pretty easily.
I suppose you could create something along the same lines for sharpening chisels, but I wouldn't bother. Chisels I sharpen on my bench belt sander.
"It ain't what you're told, it's what you know." - Granny Weatherwax
Some days, the supply of available curse words is insufficient to meet my demands.
Call me a craftsman, artisan, or artistic, and I will accept that. Call me an artist and you will likely get a quite rude comment in return. I am not a @#$%ing artist.