# Extrude Surface Along Curve

## <img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2FU7HNY96wdNs6BNueIcWZ%2FEXTRUDE_SRF_ALONG_CURVE%20copy.png?alt=media&#x26;token=d31b7aeb-897a-4fe7-b1b6-69e4753f0de5" alt="" data-size="line"> Extrude Surface Along Curve <a href="#profiles" id="profiles"></a>

The ExtrudeSrfAlongCrv command creates a solid by tracing the path of the surface edges along another path curve.

**Steps**

1. Select a surface.
2. Select the path curve near the start.

#### Command-line options

-Solid: If the profile curve is closed and planar, both ends of the extruded object are filled with planar surfaces and joined to make a closed polysurface.

-DeleteInput

* Yes: Deletes the original geometry.
* No: Retains the original geometry.

-SubCurve: Extrudes a curve the distance specified by picking two points along a curve.

The extruded surface starts from the beginning of the curve, not the first picked point. Picking the points only establishes the extrusion distance.

* SubCurve steps

  1.Select the path curve.

  2.Pick a start along the path curve.

  3.Pick an end along the path curve.

-ToBoundary: Extrudes the object to a boundary surface.

For more information, please refer to the [Rhino documentation](https://docs.mcneel.com/rhino/8/help/en-us/commands/extrudesrfalongcrv.htm).