How to modify the local Z axis of a family to make the family rotate right?

[abdelgawad]

I am trying to rotate a family along path to become perpendicular to the path using the “FamilyInstance.SetRotation” node but I want to modify the local Z axis of a family to make the family rotate right.

[Tom_Kunsman]

care to share a screen cap of your work so far? It will help those that are willing to help to see what you have done up to this point

[abdelgawad]

the input rotation angles make the first disk family rotate differently from the second / third disk.

Rotation angle = 0

Rotation angle = the angle between X vector and the plane which is perpendicular to the path

Rotation angle = 90 - the angle between X vector and the plane which is perpendicular to the path

[verdi]

Hi @abdelgawad,

I wonder if you’ve found a solution yet. I have the exact same problem.