My old instructor used to call it filleting (fill-ay-ing) the fish.You have to clean it before you can cook it. A weapon is an extension of the arm,whether it be a knife or a stick.
I have been in Kenpo (Tracy and Ed Parker (American Kenpo) for forty some years. I have written numerous articles in martial art magazines. I can only tell you about me. I learned the double knife form for Kenpo years ago. since then, I have created by own single karambit techniques using Kenpo. The one thing I've done it research into many professional knife fighters books on "defense and blocking." From there I developed the blocking system I would use and then used the Kenpo empty hand techniques but with knives. I did change a little on the targets of the techniques I've used. The karambit I think, causes much more pain than a regular straight knife. You can also hook a joint and control your attacker.In another thread (the sticks) there was a little talk about the kenpo knives. I have heard of this, but have never seen the knives used in kenpo by someone who had training. I have applied some of my techniques with a knife in each hand but I am interested in learning more. I was wondering if anybody has any more information on this or can point me in the right direction. I saw that Larry Tatum has a video set out, does anyone know if it is any good? I have never met or seen Larry Tatum move but I heard his videos are decent.