Extrude - Self-Intersecting Sketch The sketch is self-intersecting. When the sketch of an extrude profile intersects itself, the extrude cannot be recognized. Example Parent topicBoss and Cut Extrudes Extrude - Non-Planar Face Extrude - Non-Parallel Faces Extrude - Non-Coplanar Faces Extrude - Nesting Faces Extrude - Internal Loops Extrude - Invalid Edge Extrude - General Failure