Lines close to geodetic lines on a paraboloid

The problem posed in [1] has been completely solved. Properties of the line at which a paraboloid of revolution intersects a demiquadric are updated with facts convincing that the selected approach is feasible for constructing lines lying on the paraboloid, close to geodetic lines, and having properties comfortable enough to use them as tailoring lines of a metallic mesh. The main result is a demonstration of proximity of principal normals of the identified lines (they are called SG-lines) and geodetic lines.