Tried to do a favor for my son and sharpen some of his hand saws. He works as a restoration contractor and is very busy. Busted my you know what trying to sharpen the first one of his saws I picked up. Re-read my notes on sharpening and set to work. Though it has been several years since I last sharpened a hand saw, I didn't remember it being that hard to do. 2 Hours later and 4 ruined files I quit. Took the saw out in the sunshine and immediately realized that the teeth were fire hardened by their discoloration.
Are there files on the market that will handle them? Or is this intended to be either a disposable saw or one that requires being sent out to have new teeth cut?