The Create Curtain Surface option creates a surface extruded from a selected curve and projected onto a target surface, normal to the target surface.

Select the initial curve and surface, as shown in the example below. The Trim surface option will attempt to trim the set of surfaces selected to form a T-connection.

Figure 187: Select Curve and Surface for Curtain Surface Function

The final surface obtained is shown in Figure 188: Curtain Surface.

Figure 188: Curtain Surface