TO START (IN GENERAL): Spin the rotor up to speed with the palm of the hand in a downward motion.

TO START (IN ANOTHER WAY): USING THE STRING: Thread the tip of the string into the hole in the inner rotor. Wind up in the direction. When wound, pull the string with a jerk.

TO ACCELERATE: Once you have started the NSD Power Ball spinning, increase the speed by rotating your wrist in either a clockwise or a counterclockwise direction. It may take a few tries, but you will soon be proficient in controlling the rotor while exercising the muscles in your hand and arm.