Boundary Surface

The boundary surface feature lets you create surfaces that can be tangent or curvature continuous in both directions (all sides of the surface). In most cases, this delivers a higher quality result than the loft tool.

Consumer product designers and others who require high-quality surfaces with curvature continuity can use this tool.

Direction 1 and Direction 2 are fully interchangeable in the PropertyManager. You achieve the same results whether you select entities using Direction 1 or 2.
Examples of boundary surfaces:
Single curve to a point in one direction Three curves in directions 1 and 2

To create a boundary surface feature, click Boundary Surface (Surface toolbar) or Insert > Surface > Boundary Surface, set the PropertyManager options, then click .

  • Curve callouts colors match those used in the PropertyManager.
  • Click callouts to change the Tangent Type.
  • To change the display color of the surface while you are editing it, use the System Options - Colors page to edit the color for Temporary Graphics, Shaded.

Example of Boundary Surface Alignment

1 Boundary surface feature

The mesh shows the iso parameters for the boundary surface feature.
2 Starting surface
3 Ending surface
4 Selected curve

Align with next section

Aligns the boundary surface iso parameters to the iso parameters of the start and end surfaces, based on distance.

Align with section normal

Aligns the boundary surface iso parameters normal to the selected curve.

Align with other geometry

Aligns the boundary surface iso parameters with greater influence determined by the end points of the selected curve.

Align with iso parameter

Aligns the boundary surface iso parameters to match the flow of the iso parameters of the starting surface at the selected curve.