Trims a surface and converts the trimmed surface to a natural surface with the same shape, in one operation.

1. Choose Surface Edit > Trim > Trim Convert.
2. Select a surface. (You can only trim convert one surface at a time.)
3. Click on the regions to keep.
   Note

   If 3D Trimming is turned on, you can first select curves to project onto the surface in order to define trim regions. You can also select a vector option.

   Crosshairs appear on the selected regions. The size of those region selectors can be modified through the option window.

   
4. Click the Convert button

   The tool trims the surface, then attempts to convert the trimmed surface to a new surface with natural boundaries.

   Note

   If the trimmed surface is not four-sided, the system issues an error and asks you to redefine the trim region.

   A locator shows the maximum deviation between the original and the converted surface.

   
5. If you are not happy with the result, click the Revert button to get back the original untrimmed surface.