Surfacing > Creating Advanced Surface Features > Creating Boundary Blends > To Create a Boundary Blend Surface Using Approximate Curves
  
To Create a Boundary Blend Surface Using Approximate Curves
1. Click Model > Boundary Blend. The Boundary Blend tab opens.
2. Select boundary curves in the first and second directions.
3. To select the curves to approximate, click the Options tab, click the Influencing curves collector, and select curves.
4. To set the smoothness, in the Smoothness box, type a value from 0 to 1.
5. To specify the number of surface patches in the first and second directions, in the Patches in direction boxes, enter a value from 1 to 29 patches.
The greater the number of patches, the closer the surface is to the selected curves. If the system cannot construct the surface using the number of patches specified, you can enter a different number of patches.
6. If necessary, define other optional elements.
7. Click .