After watching what a buddy did to a nice folder with one of the diamond impregnated stones told him bring it over and I'll see what I can do. That blade had more scratches than a dog with fleas. I have a couple abrasive rubbing blocks that sears used to sell. Taped the knife edge and did manage to polish out all but the most deeper scratches. Started out with a coarse carborundum stone to clean up and redefine the cutting edge, than a Norton india stone. Then progressed to a soft wa****a, hard arkansaw then to a black hard arkansaw all with honing oil. When done had a nice defined bevel on both sides and literally shave the hair off your arm. My wife has an amazing ability to take a knife with a good cutting edge and somehow manages to destroy it. She will buy large pork loins and cut them up to make chops and roasts and even with a cutting board destroys the edge. Same for larger cuts of beef. Just shake my head and start sharpening. Frank