'inch' power = short power
IMHO inch power is a phrase used by the JKD crowd to describe short power, which is a compliment of long power. I have also heard these phrases used in other Chinese Martial arts. Both short and long power originate from the ground and use the body as a conduit. Obviously short power has a shorter duration and is more explosive. The legs, body, and arms all act as one unit and project the force into the target at the contact point. Your root acts as a stable base so that all your power goes into the target. Everything is relaxed and only necessary muscles are used in full synchronization with one another. You can hit with any body part and direct the energy into the opponent. Long power without short power is like a push and short without long is like a snap. Put the two together and you get penetrating power that can uproot.
I practice short power by holding walnuts up against a wall and cracking them with only my horse. The hand holding the walnut against the wall does not retract otherwise the nut will fall on the floor. I also practice short power on the dummy. I practice it in chi sau whenever I am closer than punching range and need to create space. I project into my partner and if I do it right I can uproot him with whatever is in contact at the time.
regards,
Dzu
one inch punch, don't waste your time
Before you start working on the one inch punch, you must be sure your ONE punch is powerful. Don't waste your time training one inch, or you'll end up hurting yourself.