For those of you who can speak/read Japanese this may be more helpful - a video of a smith making a saw from tamahagane
http://giantcypress.net/post/35631574741/heres-a-second-japanese-saw-making-video
cheers
Robin
http://giantcypress.net/post/35631574741/heres-a-second-japanese-saw-making-video
cheers
Robin