I have been tempted many times to do something similar. I have not though because I have the same thoughts as DFK. I did make an exception once for a sentimental deal. Found an old piece of a misery whip saw blade sticking up out of the ground on my ranch. Quine sabe? Who knows how old? Folks with steel been around here since the Missions. Made a nice little knife out of it. Won't hold an edge worth a darn,(I've made quite a few knives out of misery whip saws and have had em turn out well, this one just didn't HT the same). But who cares. Cut a couple calves at our next branding and then it sits on the shelf looking bitchin. It's the story that is worth it to me, the steel coming from my ranch, otherwise no, I wouldn't do it.