One fella made a knife sharpener from the tungsten pieces in the teeth ( if they have them). Two in a v formation, it makes a good source for bespoke fixed angle sharpeners, I suppose if you do it differently, you could thin the primary bevel out as the knife wears. I think they would have to be tungsten in good nick though. ( also make really exellent frisbies, but pehaps for the soleuse of kids and dogs that you wish to get rid of)