This is some kind of a tutorial of how i prefer to do this. 1: Create desired contour lines in 2 projections. And make a group from them. 2: Craete desired profile in 3-rd projection (quarter-circle arc in this case). 3: Create additional “helper-plane” which i use to scale the sections more easily. And make it a group 4: Copy this plane along the axis of the first 2 contours. The more…