I would say when the left hand is turned to the plane it is parallel . . . but also assuming that you have the same amount of #3 at fix as actual impact it also determines the Plane Angle . . . Lower hands = More #3 and thus more towards the Elbow or Hands Plane . . . Higher hands with the less #3 result in a Turned Shoulder Plane angle.

It is a different question!:)

Bucket..isn't that what I stated previously....I smell what your steppin in!!! #3 it's angle and range of motion varies depending on the plane angle ...As stated above and previously... Inclined Plane...verify sweetspot plane and/or shaft plane...remember the shaft may move from its own plane and rotate onto the plane of the sweetspot...So when you are referring to Inclined Plane? Sweetspot or Shaft? Usually when Turned to the Inclined plane they are in the same plane!!!

They are congruient. In line but not on the same line.

#3
 

1/2 way back until 1/2 way down- flatter and more closed.

At least I'll start there- have to make a living first before I take a look at the whole thing- gotta go - the IRS and Bank are knocking on the front door- wait a minute the adrenaline was flowing but now I realize that I'm in Bucket's closet- it's his house- Ah! no worries!

Can't help myself.

The primary lever isn't on plane, the secondary lever is always on plane.

Bagger

Bagger- good point- just clarify it a little more- the primary lever isn't on the "swing plane" normally. It is has it's own plane with a flat left wrist i.e. the left arm and clubshaft are "in-line", and that is normally different than the swing plane. Only when the left shoulder, hand, and "clubhead" are on the "swingplane" is the primary lever "on the swing plane"- and that can happen- i.e. zero number three accumulator or your avatar picture looks like another situation where it might be on plane or close.

But your post wasn't much different than mine in that I didn't take the time to explain in detail the potential issues to my post- i.e. 1/2 back and 1/2 way down on a chip shot?, full shot? etc. etc. And I didn't take the time to explain it fully in regards to the entire swing and the relation of the #3 accumulator plane to the swing plane and does that change or have implications if I'm using a short shot or full shot, and flat plane or steep plane, small #3 or large #3, plane shift or no plane shift. Why? Haven't looked at it before and don't have time right now to check it out.

Hopefully your game is good! or getting better! because it is a great game to play!:)

Good one! That one made me chuckle.

Oh hey! Say "What's up" to Ichabod Crane for me next time you pass the fridge.

Everyone that said parallel is on the right track. But this doesn't explain where they are parallel and thus not fully explaining the relationship. One more night before I post the answer :)

They all come to the same "point" and that point is on 'the' plane, regardless of plane angle or loading action. I agree with Annikan that the rest can depend on multiple factors, but assume you must mean an 'ideal'.