[EdZ]

The "associated" planes are for understanding WHY the clubface moves as it does for each of the 3 hinge actions. But ALL of the action of the clubface takes place on ONE plane, the inclined plane. Thus, the following descriptions are not incorrect: horizontal=closing, angled=square, and vertical=opening. Cool?

You are confusing the feels with the reals so to speak.

horizontal hinge action 'feels' like a full roll of the clubface, and yes, it is a 'closing only' motion - relative to the left shoulder hinge, just like a door

angled hinge action 'feels' like a no roll, or as you put it 'square', but the clubface is actually closing AND laying back

vertical hinge 'feels' like a reverse roll, or as you put it 'opening', but the clubface is actually ONLY laying back


the important point to keep in mind - the hinge is in the left shoulder