1. Kuzushi - the breaking of balance or crumbling of structure
2. Tsukuri - entry, or building the relationship archtecture of a throw.
3. Kake - execution of the technique.
Sloan Sensei recently wrote a post on the this classical view.
Kyle Sloan's excellent article
While this classical analysis of a technique is correct, I do not feel like this is the way we should teach our minds the way a throw works.
In Waddell Sensei's old dojo there was a lot of talk about forgetting the kake, or execution part of the technique. If you created off balance, and fit in properly, kake or execution happened automatically. There was once a Jiyushinkai bumper sticker that said, "Kake Happens".
Another thing I have noticed in my years of trying to throw people is that the first technique rarely works. Against higher level players the first technique NEVER works. So in the gospel according to me the dynamics we should train our minds to search for is...
Kuzushi, Tsukuri....Kuzushi, Tsukuri.....Kuzushi, Tsukuri....and then uke falls when he decides he can't stand any more.
The Kake mentality, the idea we actually have to execute a throw, is what makes much of the judo world blast with power. It is what makes the Aiki world crank joints and collide with energy.
In order to do the techniques at higher technical and philosophical levels...
We cannot make kake. Kake happens.