Conclusion

The overall process of fairing is as follows:

1. Rough up the shape using the Add Row/Col and the Move Point commands

2. Fair the surface using the k-curve and Move% commands

3. Check the fairness using the Gaussian curvature display

Remember the following points:

A NURB surface is a rectangular-like grid of rows and columns

It is more difficult to fair a distorted, non-rectangular shape

Spread the rows and columns evenly over the surface

The fewer the rows and columns you use, the better

Keep the spread of rows and columns within a 2:1 spacing ratio

Rough shape the surface after adding each row or column

Wait to fair the surface until after you have added in all rows and columns

Use the k-curves on the rows and columns with the Move% command

Turn on selected hullcuts to see them dynamically change shape

Fair the surface only to within building tolerances

Use the Gaussian curvature display to check for unfair spots

Fairing is not an automatic process and there are different degrees of fairness. It is impossible to fair a surface perfectly. All you have to worry about is getting the hull fair to within building tolerances.