# Extrude Curve Tapered

## <img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2FHgc4Ypp0fCajFvkWux7y%2FEXTRUDE_CRV_TAPERED.png?alt=media&#x26;token=ed15c2b1-655b-4753-8b17-fcd09d2b36d6" alt="" data-size="line"> Extrude Curve Tapered <a href="#profiles" id="profiles"></a>

The ExtrudeCrvTapered command creates a surface by tracing the path of a curve in a straight line tapering in or out at a specified draft angle.

**Steps**

1. Select a curve.
2. Specify a distance.

#### Command-line options

SetBasePoint: Specify a location that serves as the first point when picking two points that set the extrisopm distance.

Direction: Two points establish the direction angle.

* Direction steps

  1.Pick a base point.

  2.Pick a second point that establishes the direction angle.

DraftAngle: Specify the draft angle for the taper. The draft angle depends on the construction plane orientation. When the surface is vertical/perpendicular to the construction plane, the draft angle is zero. When the surface is parallel to the construction plane, the draft angle is 90 degrees.

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.

Corners: Specifies how corner continuity is handled.

* Sharp: The corners of the tapered surfaces will extend to meet at sharp corners with position (G0) continuity.
* Round: The corners of the tapered surfaces will be filled with filleted segments with tangent (G1) continuity.
* Smooth: The corners of the tapered surfaces will be filled with blend segments with curvature (G2) continually.

DeleteInput: Delete (Yes) or keeps (No) the input objects.

FlipAngle: Toggles the draft angle direction.

SplitAtTangents

* Yes: Tangent points on the input curve extrude as joined edges.

<div align="left"><figure><img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2FQ0kOfaCWNRDh0i5rK4Ot%2Fsplitattangents_yes.png?alt=media&#x26;token=3d2d81ee-567e-47e6-a0a4-000b1a8d95c3" alt=""><figcaption></figcaption></figure></div>

* No: Tangent points on the input curve extrude as surface kinks.

<div align="left"><figure><img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2FhG4d8ET65OXeBv22GXG0%2Fsplitattangents_no.png?alt=media&#x26;token=d38b6684-36df-48c5-93f9-61f3c3ee4671" alt=""><figcaption></figcaption></figure></div>

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