Hand tightening
In kumdo, son-ui jo-im (손의 조임) covers how both hands hold the jukdo's hilt, how force is applied, the tension and balance of the hands when attacking, and how they relax after the strike.
How to say it
- Korean
- 손의 조임son-ui joim
- Spanish
- Tensión de las manos al empuñar y golpear
- English
- Hand tightening
- Japanese
- 手の内てのうちte no uchi
Son-ui jo-im (손의 조임) is a kumdo term for how the two hands are used on the jukdo (죽도, bamboo sword). The glossary of the Korea Kumdo Association (대한검도회) says it combines four things:
- how the hilt (kaljaru, 칼자루) is held with both hands;
- how force is applied;
- the state of tension and the balance of both hands when attacking;
- the state in which the hands' tension is released after the attack.
On the grip (pajibeop, 파지법), a dojang's study page says the left hand puts the little finger at the end of the hilt and tightens the ring and then the middle finger, with the thumb and index finger resting lightly. The right hand holds the jukdo softly.
On the moment of the strike (tagyeok, 타격), one explanatory text says that at impact the little finger is squeezed firmly, with the right hand pushing and the left pulling, as if wringing a cloth. The association's textbook (Kumdo gyobon, 검도 교본) says that for the side strike (heori, 허리) force is applied through the little and ring fingers of both hands.
A Korean source explains that the term sonmaemusae (손매무새) names something very close: the way the jukdo is held, how force is put into both hands at the strike, and the state of the hands after the strike.
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