You can project a sketched curve onto a model face to create a 3D curve. You can also create a 3D curve that represents the intersection of two extruded surfaces generated by creating sketches on two intersecting planes.
You can create multiple closed or open-contour projected curves from a single
sketch. You can also use 3D sketches as input for the
Projected Curve tool.
The Projected Curve tool does not support projections of intersecting
curves.