I have a question about how to convert a closed shell to a solid.
By doing following steps, I get a Shape.
sew.Add(face6); // face1 to face6 form a closed space
When I print sew_shape.ShapeType(), it returns 3 (Shell).
How can I convert sew)shape to a solid? (i.e. sew_shape.ShapeType() can return 2)