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Controlling Path extrude rotation values and Contour orientation

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Hi all,

I have two questions about how path extrude and contour nodes work. I tried to create a network that creates a set of extrusions (wood beams) based on 2 NURBS and encountered two issues:


1. 1st and last extrusion along path works fine, it creates extrusions in correct orientation. All in between extrusions are rotated 90deg. Rebuilding curves to 3D polygons do not help. Is there a reason for this behaviour? (green in the attachment) 

2. The result of using Contour node on loft surface is a set of curves, but why the last one is always created in the opposite direction compared to the others? (red in the attachment) Is there an easy way to align them all in one direction?



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