It's what Homer Kelley is talking about.
As the Plane Angle is Steepened (as the Ball is Played back), the Clubface (because of the steeper plane) will produce a push type shot although the leading edge is square to the target. See for yourself. Do all of this at Low Point. Get a Club, square it all up, then raise the grip end but keep the leading edge square. See, the Face points to the Right. Then, re-align the Face by rotating the grip until the face will produce a re-bound down the target line.
But that's the easy part to understand. What we want to know, is how can Hinge Action sustain the line of compression so the ball will fly straight. For that we need to learn how the Right Forearm Angle of Approach, when applied to a steeper Plane Angle, will increase the closing ratio of the clubface.
- As you play the ball back, you need a corresponding plane angle steepness adjustment.
- Because the steeper plane tilts the Low Point Plane, a clubface adjustment (rotate grip) must be made to align the face to the Target.
- Because the Plane is Steeper, the Right Forearm is also Steeper. So, the Right Forearm Angle of Approach will close faster, so Hinge Action can produce and sustain the line of compression.
It's really, simple. This is a big part of Chapter 2.