A surface is built using each selected B-Spline in the order of selection. Only 2 B-splines are required and the length of the B-Splines will be used to control the surface extents. The direction of the B-splines are also very important so it may helps to show the arrow heads for the curves.
Projects selected closed B-spline to selected plane and creates a surface from the projection.
This option offers the ability to revolve a surface about an object axis using a reference b-spline. It will prompt the user for the axis to use for rotation (X-axis shown below) and the extent of rotation from 0-360.
This command can perform simple to complex sweep operations. It requires selection of a B-Spline as the defining shape (open or closed) and a second B-Spline as the guide curve.
This command builds a tube defined by the selected b-spline axis. The user is prompted to select a desired Tube diameter and will build a circular tube of that diameter following the curve.
Use for B-splines that bound a set of point groups and are used to create a surface