FamilyInstance.ByPoints and set Rotation

Hi, all
I come to this stage for tunnel modeling.
I tried many ways, but everything failed, and I’m going to try the Form.byLoftCrossSections node eventually.
And here is also problems…:disappointed_relieved:

first, I placed profiles made from mass templates,
and set rotation.

However, there seems to be a problem with the angle setting of the profile.

What I want to do is…

Am I misunderstanding this node?

01. Line 라이닝.rfa (388 KB)

190425 스윕 단면각도.dyn (84.6 KB)

And I made very simple curve

then. this look good


At the beginning of the curve, an excessively curved section appears…