Local sawmill has given me access to about 20 ft of band saw steel. each piece is about 8 in wide, and has been cut to about 5 f in length. Needless to say, they have a little curve to them. I think they're carbon since the steel turns gray with a little vinegar splasked on, but have no idea what kind. Nevertheless, I hope to make a few knives from them, but need to straighten out the individual piece after roughing out the shape. With stuff I have on hand I can easily build a small propane fired oven, complete with digital pyrometer, if necessary, but have no idea where to begin. Any ideas would be highly appreciated.