# Fillet Surface to Curve

## <img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2F50ZyLtextZYgxcyr6GmA%2FG4_08_SURFACE_FILLET_CURVE.png?alt=media&#x26;token=f06e1790-1267-462f-9b2f-d766767f2c98" alt="" data-size="line"> Fillet Surface to Curve

The FilletSrfCrv command creates a fillet surface between a surface and a curve.

<div align="left"><figure><img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2FM76E1R6V104NUk9XbAq2%2Ffilletsrfcrv.gif?alt=media&#x26;token=713d7cec-3476-40d9-b621-520506f8899d" alt=""><figcaption></figcaption></figure></div>

### **Steps**

1. Select a surface.

   The picking location decides the side to create the surface.
2. Select a curve near the surface.

### Options

**Radius**: Move the slider to change the radius, or double-click on the slider to enter a value.

**Range**: Click a number button to change the range of the slider for smaller or larger adjustment.

**Blend Type**

* Arc: Creates a fillet surface with arc sections and tangent (G1) to the input surfaces.

<div align="left"><figure><img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2FJT4PvWnUm5WYwR0rJBku%2Ffilletsrf_circularfillet.png?alt=media&#x26;token=cf6e8017-825f-48e6-bd2a-91f29077f518" alt=""><figcaption></figcaption></figure></div>

* Deformable: Add more control points to the fillet sections for adjusting tangency and bulge.

<div align="left"><figure><img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2FsrwN1wyQ9tAMYS6I88Mm%2Ffilletsrf_deformable.gif?alt=media&#x26;token=8ebdd017-29c5-4452-acd6-9b01d836735f" alt=""><figcaption></figcaption></figure></div>

* Deformable degree: Sets the degree of fillet sections from 3 to 5.
* Tangent: Moves the second points on both ends in the tangent direction.
* Bulge (For degree 4 and 5): Moves the point(s) in the middle to make the fillet sections sharper or flatter.
* G2 Blend: Creates a blend surface connecting to the input surfaces with curvature (G2) continuity.

<div align="left"><figure><img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2Fhsk1Sn6zQA6qSGAkgs6d%2Ffilletsrf_g2blend.png?alt=media&#x26;token=4e760a2a-1022-4cab-aa84-0f4056bc3e6e" alt=""><figcaption></figcaption></figure></div>

**Trim**: Uses the output surface to trim the input surfaces when possible. History is supported when the Trim checkbox is disabled.

<div align="left"><figure><img src="https://3375153115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5uhW8FwQpXQj8tHUULMo%2Fuploads%2F2cRce0yB2qifBWKU9BRg%2Ffilletsrf_trim.gif?alt=media&#x26;token=48381f27-992d-4886-acac-383b0ac7172f" alt=""><figcaption></figcaption></figure></div>

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