Use a Line to Define the Sweep Plane
Profile Structure Design
This function determines the sweep plane based on a straight line selected from a model and its normal. The cursor is constrained to the sweep plane. Profile sweep is performed in the sweep plane when a point has been selected as the position for the cross-section.
- Start adding a profile.
- Click the starting point of the profile.
- Click the straight line as sweep plane with following button:  Plane of profile sweep (with line). Plane of profile sweep (with line).
- Select a line from the model.
- Click the end point of the profile.

Note: 
  - Instead of clicking the button, press the T key when the cursor is on the line.
- You can undo the sweep plane of the profile defined above, for example- By clicking again the button  and selecting another planar surface. and selecting another planar surface.
- By selecting another auxiliary function.
- By pressing the U key or selecting the context-sensitive function: Constraint >  X axis. X axis.
- By pressing the I key or selecting the context-sensitive function: Constraint >  Y axis. Y axis.
- By pressing the O key or selecting the context-sensitive function: Constraint >  Z axis. Z axis.
 
- By clicking again the button 
