PRACTICE

These cuts may be practiced with an actual or simulated weapon, but when learning, the use of the hand in lieu of the weapon is advised. Master the whip of the HAND and you will develop a better understanding of the action of the blade.
When the hand alone is used, the fingers should be extended and joined; the edge of the hand opposite the thumb becomes the imaginary cutting edge of the knife. The hand is thrust out vigorously, coming to an abrupt halt at the fullest extension of the arm. A whip-like snap of the hand will take place. This practice will be valuable if you are ever confronted by an opponent when you are unarmed, for the edge of the hand, in this position, is used like an axe; the fingers joined at the tip are like the point of a blade.
After mastering the cut as directed, you may then increase the effectiveness of the blade by a snapping WRIST action in a whip-like manner, directing the cutting edge of your blade to its target with greater velocity. This sharp wrist-snapping cut is of utmost importance when tiir target is so close that it must be reached without fully extending your arm.