I have used the extrusion tool to add depth to my 2D drawings, but I do not know how to complete the modeling throughout in 3D Rhino 5.0. The drawings as an extruded straight line look great in a geometric configuration, and when I render the model looks fairly good. But, I am attempting to model 3D within boating & yacht design, and am a little on the frazzled side. Can anyone suggest an alternate route, please. Thanks kindly.
Is this a option? See link "Rhino Essential Training":