I am having a problem splitting multiple surfaces with multiple curves.
Two of the splits are not working.
I think there are some issues happening with the tolerance of curve intersections but I’m not sure how to clean it up.
Thanks for any help!
multiple surface split internalized.gh (17.6 KB)
you used Surface Normal as Plane for the Offset operation:
here is with Frame instead:
[edit] small investigation on casting stuff 
casting a Vector into a Plane won’t work because the Vector does not hold enough info to determine both the plane Origin and its Orientation, but I was just curios to see what is the result of the actual cast
so the Vector is cast as Point, and when you cast that Point as Plane it becomes the origin of an XY_Plane 
good to know
