# Extrude curve tapered

## <img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2FfG1v02psVIUBkZz4nrTD%2FG3_02_SURFACE_EXTRUDE_TAPERED.png?alt=media&#x26;token=d9715322-fc3b-49b3-9592-775ba3269762" alt="" data-size="line"> Extrude Curve Tapered

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 extrusion distance.

**Direction**: Two points establish the direction angle

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 objects are filled with planar surfaces and joined to maje 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).

**DeleteInput**: Deletes (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%2FDiF7aEGH9cL6d0oJVcjU%2Fsplitattangents_yes.png?alt=media&#x26;token=53f8e990-4078-4283-91c6-a4a8bad0af23" 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%2Ff6Vs41kUuNlSpGVOmSF6%2Fsplitattangents_no.png?alt=media&#x26;token=3c3a7281-05d6-4dcb-9846-ebef41e5d18a" 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#\(null\)).