Closing Sketches to Models Closes a sketch with an open profile, using existing model edges. To use an open profile sketch to extrude using existing model edges: Open a sketch on a model face. Sketch an open profile with endpoints that are coincident with model edges on the same face boundary. Click Tools > Sketch Tools > Close Sketch to Model . An arrow points in the direction in which the sketch will close. (The extruded boss will either be within the sketch lines or outside of the sketch lines.) In the dialog box, select Reverse direction to close the sketch, if necessary. Click Yes when the arrow points in the correct direction. Click Extruded Boss/Base or Insert > Boss/Base > Extrude , or Extruded Cut or Insert > Cut > Extrude , and specify the End Condition in the PropertyManager. Click . Parent topicSketch Tools