Curve: Create Surface Intersection

Function

Intersect creates a line(s) (Edge, Compound) at the intersection of two inter-crossing surfaces.

Call

Geometry > Curve > Create 3D > Surface Intersection

<Surface Intersection Curve>

Select Object Shape 1

Select one of two surfaces (Shell, Face) for an Intersect operation.
 

Select Object Shape 2

Select the other surface (Shell, Face) for an Intersect operation.

Notes

If there is only one single intersecting line, a line of the Edge Type is created.  If there are a number of intersecting lines, a Compound, which is a simple union of a number of edges, is created.