Menu : SURFACE

Command: Change:Extend

Shortcut : None

This command extends the target surface making it longer by adding a linear surface strip to the surface's boundaries.

One application of this command is when working with surfaces built from 3D curves. If the 3D projections are obtained from curves projected onto a surface, the resultant surface may not intersect the original surface. If they do not intersect then these two surfaces cannot be blended together. Extending the 3D built surface makes the surfaces truly intersect and a blend can be created.

In the example below the two surfaces do not intersect so they cannot be blended together. After one of the surfaces is extended they now cross over each other and can be blended.