Extend to Curve Property Editor

Extends a surface to a curve.

To apply: See Extending Surfaces [Surface and Curve Modeling].

To redisplay: Select the surface, click the Selection button on the Select panel, then click the Extend to Curve icon.

Continuity

The continuity of the segment between the original surface and the curve:

Position (C0). The point is joined by a straight line segment.
Tangent (C1). The point is joined by a smooth curve segment and the tangent does not change abruptly.
Curvature (C2). The point is joined by a very smooth curve segment. Neither the tangent nor the curvature changes abruptly.

Scaling

A tangent scaling factor that affects the shape of the segment between the original surface and the curve. This parameter has no effect when Continuity is set to Position (C0).