I've got a crude old hand made straight blade that came out of a piece of tool steel that was liberated from the Sheet and Tube mill in Youngstown, Ohio about 100 years ago. It's been in our family for all that time, passed down to my father, to me, and eventually to my son. The sheath doesn't match the knife, and it's not a very pretty thing, but it works fine for gutting deer and stays very sharp. Never saw the need to put all most as much money in a knife as I do on my rifles.
