Hello

I am trying to create a ruled surface between two non planar sets of curves.

I have tried numerous methods but no success so far.

* tried using the imprint tool to project planar curves onto nurbs surface

> one curve managed to imprint the rest failed.

* Tried extruding the curves and using line of intersection to get the profiles

>This worked but the curves are very bad and cannot create a ruled surface

>Also tried boolean subtraction and deleting the unwanted faces

* tried sweeping a straight line segment along the lines of intersection

>This doesn't work either

My suspicion is that the curves are not good. I have tried creating the curves in FormZ and Illustrator and the problems are the same.

Attached is the file with curves drawn in formZ if anyone would like to have a look.

I don't work with curves or nurbs in formZ very often so have run aground quickly with this one.