Part Modeling > Base Features > Blends > Rotational Blends > To Create a Rotational Blend by Selecting the Sections
  
To Create a Rotational Blend by Selecting the Sections
1. Click Model > Shapes > Rotational Blend. The Rotational Blend tab opens.
2. Click to create a solid feature, or click to create a surface feature.
3. To select chains to use as the first section, click , or select Selected sections on the Sections tab.
4. Click the Sections tab and select chains to define the first section. Optionally, click Details to open the Chain dialog box to select chains.
5. To create another section, on the Sections tab, click Insert, click Details to open the Chain dialog box, select chains, and click OK.
 
If the first section is defined using selected chains, the rest of the sections in the blend must also be selected.
All the sections must lie in planes that intersect at the same axis.
6. If required, select more sections by repeating the previous step.
7. To remove material along the blend to create a cut, click . Click to remove material from the other side of the sketch.
8. Click the Options tab and select the method for connecting the sections:
Straight—Connects the blend sections with straight lines and connects the edges of the sections with ruled surfaces, or
Smooth—Creates smooth lines and connects the edges of the sections with spline surfaces.
When you sketch the sections for a smooth rotational blend, all the section geometry must be sketched on the same side of the axis of revolution.
9. To create a closed shape in which the first section of the blend is also the last section, click the Options tab, and select the Connect end and start sections check box.
10. Click the Tangency tab, and select a tangency condition for each start and end section.
11. Click .