Osamu techniques are ways of stopping the swing motion of the nunchaku. It is very important that you use your total body to decrease the speed of the nunchaku. Doing so allows you to halt the swing and catch the nunchaku smoothly.
1.) Koshi (Kaiashi) - This catching the nunchaku at your hip level.
2.) Shomen - Catch the swinging end of the nunchaku just in front of your solar plexus. This is a very fundamental catch. There are lots of different ways to catch the nunchaku depending on how you are swinging it the positioning of the hand, however, is basically the same.
3.) Waki Osame - For this movement, 1 hand swings the nunchaku behind the same-side shoulder (i.e. with your right hand, swing it over your right shoulder). The other hand reaches across to catch the swinging end at the armpit level.
variation: You can also use the armpit itself to catch the swinging nunchaku. Rather than swinging it behind the shoulder, swing it out in front of you. Using your total body, pull the swinging end toward you. When you feel the swing end against you side, squeeze the elbow and armpit inward to catch it.
4.) Ura Osame - Catch the swinging end behind your back. For example, swing it over your shoulder with right hand. The left hand goes behind the back to catch the swinging end.
5.) Maki Toru Jodan - Swing one end behind your neck on the opposite side and use the other hand to catch. For example, with your right hand, swing the nunchaku behind your neck on the left side. Use your left hand to catch the nunchaku as it comes across.Be careful not to hit yourself in the face.
6.) Tatami Osame (mochi, Tome) - Catch the nunchaku in the same hand that is swinging it. Use your wrist to pull the swing end toward you.