Page 11 Modeling a Tank: Turret

Ok, just one more detail and that is a small curve for some sort of gun. Which is simple to do. Just select the curve and Revolve it with 'End' osnap on and revolve it by snapping on the right end of the curve and with the shift key down, for temporary Ortho, drag a axis to the right. Use the 'Deformable' option with 4 points option.

Select the resulting surface and Scale1D it with the origin point being near the center of the object and flatten it to about a scale of .6, which can be typed in when asked for the scale factor.

And that's it. Hide the curve layers and save the file.