Waza is based on the fundamental principle of Judo, that is, "Maximum Efficient Use of Mind and Body". The theories of Tsukuri and Kake are expressing the principle from Waza's viewpoint.
Tsukuri is made up of Kuzushi which means to destroy your opponent's posture or balance, and
"holding yourself ready" to make your attack easier.
To actually apply your contemplated technique, when his posture has already been broken by Tsukuri, is called Kake. Tsukuri and Kake can also be called technical principles of Judo.
While you are practicing Tsukuri and Kake, both depend upon the fundamental principle of "Mutual welfare and benefit" and "Maximum efficiency," you can understand and master the principle which can be applied to all phases of human life. You proceed from Waza to Way by practicing Judo.
