Importing a Blend Feature
You can read in data points from an ASCII file to create a blend. The data file defines the type of blend, as well as the Cartesian coordinates of all the blend section points. All blend section points are located relative to a single coordinate system.
Notes on Creating Blends
• Two points in a curve define a line. More than two points define a spline.
• The end point of one curve and the start point of the next curve must be coincident. For closed sections, the previous statement is true for the last point of the last curve and the first point of the first curve. There can be only one closed curve for each section, and that curve must consist of at least two segments.
• When the points that are used to create a blend section from a file do not all lie on a plane, the best fit plane is created and the points are projected down onto the plane.
Modifying an Imported Blend
To modify a blend created from imported data, right-click the blend in the Model Tree and choose 
Edit. The .ibl data file opens in a text editor. When you edit the blend data file, a new file, feat_#.ibl, is created in your current working directory. Modifications of a blend feature do not affect the original file from which it was created.
Edit. The .ibl data file opens in a text editor. When you edit the blend data file, a new file, feat_#.ibl, is created in your current working directory. Modifications of a blend feature do not affect the original file from which it was created.Creating a Blend from Imported Curves
If you are importing data points from a measuring device, you should import them as curves first to insure smoothness. You can then make the imported curves smooth and create a blended surface from the smoothed curves.