. . .[H]e finally decided to amputate his trapped forearm and all he had was that crappy blade, much damaged by the chipping attempts. He finally broke the ulna and radius and cut through the rest his arm to free himself. . . . I carry single-edge razor blades in my PSK and they would have done the job well. He broke the bones of his lower arm, although I don't know why he couldn't have dissected his elbow. He is better off to have that lower stump to work with his prothesis. An SAK with a saw blade may have taken care of the bones, or maybe even a wire saw with a weight hung from one end for one-handed use. All armchair quarterbacking to be sure. He said the hardest part was cutting the nerve-- fire all the way to his neck he said. A really sharp blade would have at least made that agony shorter. I've noticed when I really cut myself bad with a sharp tool, that it really doesn't hurt much. I assume that is in part because the sharp edge doesn't cause as much trauma-- clean and quick rather than tearing and crushing.
Now that I have ruined your most recent meal.....