My big problem with the spline model is the 3rd dimension. I make the initial outline but I cant get it to extrude (is that word I want?) properly. Lets say I make a human head. I draw it and its extended. so I can then grab the line on the bottom to move it and set its thickness. I now have a flat extruded object. Next I can change the extrusion envelope. It then lets me adjust the extruded area (it puts up blue and green lines) but the orginal flat face that I drew out cannot be modified. Am I just missing something simple? Does this make any sense?