Cannot extrude the special-shaped sketch

Hi my friends, I import a 2D dwg file into the Sharp 3D, as shown in the figure below. But I cannot extrude the special-shaped plane. Only those circles can be extruded. Could anyone help me to fix it. Thanks so much.


I guess your figure is not closed circuit. If you tap the line it will be highlighted and you see where it is disconnected. Happens to me all the time :slight_smile:

You are right! I missed some points. Thanks!