Learning Ninja : SHURIKEN (blade throwing)

The Togakure Ninja system uses a four-pointed throwing blade called a SENBAN SHURIKEN. The shuriken can be used accurately up to thirty feet from the target, and can also be held in the hand for close fighting.
Grip the shuriken at the outermost edge of its points and throw it on a level plane horizontally or vertically. Begin practice-throwing a few feet away from the target in order to learn how to straighten your arm and when to release the blade. The blade derives its power from the snap of the hand and forearm as a unit - don't snap or bend the wrist. The blade should stick in the target if your arm and throwing hand are pointing straight at the target after release. Do not allow your arm to fling past the target when throwing.
Throwing the straight blade is a matter of learning first how to release the blade for straight flight, and second, how to judge distance for correct amounts of spin in flight.
begin practice about four to six feet away from a target. Grip the knife by the handle and throw it point-first at the target. Experiment with distance until you can successfully stick the knife in the target several times in a row. Mark this distance on the ground so that it will be easy to recall it in successive practices.
After becoming comfortable with this method, double your distance from the target. You should now be approximately twelve feet away. Grip the knife by the point of the blade and throw it handle-first at the target. The blade should turn way over and stick point-first into the target. Again determine the proper distance that will let you successfully stick the knife in the target target several times in a row, and mark it on the ground.
Increase your distance from the target to eighteen feet. Grip the knife by the handle and throw it point-first at the target. The blade should turn over one complete time and stick point-first into the target.
As with the shuriken stars, the straight blade should be thrown with a straight wrist, and the throwing hand should be pointing at the target after releasing the blade.