You are more likely to receive assistance if you provide a file with curve and the surface which is not intersecting. Do no expect someone else to go through all the steps based on the video to create the surface which causes the problems.
Hello - for now, if you ShrinkTrimmedSrf the surface, you can get the intersection point. My guess of the moment is that having the underlying surface and the curve entirely coincident is problematic for the intersector.
Hi, @pascal, Thank you for your answer, yes I’ve mentioned that Shrinking the trimmed surface seems to work. However, I wanted to know if it’s the expected behaviour of Intersect or am I misunderstanding something?
It seems even changing the curve to make this coincident partially couldn’t help to solve the problem.