I never thought of making knives from railroad spikes! I'll have to get one of these. There a few on e-bay now.
http://video.google.com/videoplay?d...=knife+making&ei=eH2QSN7IJJSw4QKqu7mVCA&hl=en
http://video.google.com/videoplay?d...=knife+making&ei=eH2QSN7IJJSw4QKqu7mVCA&hl=en