Since sharpening my jointer knives cost almost as much as buying new ones, I bought a new set. I now have three dullish jointer knives and a few sets of old planer knives on a shelf. I may try to sharpen the jointer knives some day, but the planer knives are for the Ridgid, which has a preset depth designed into them. So I was wanting to ask if anyone out there has found other uses for them. New scrapers? Blades for planes? I did find that the old jointer knives worked well for setting the height of the new ones.