Which CAD technique involves moving a profile along a path to create intricate shapes?

The CAD technique that involves moving a profile along a path to create intricate shapes is called "Sweeping". Here are the steps:

1. Create a profile: This is the shape that you want to extrude or move along a path. It could be any shape like a circle, square, or a custom shape.

2. Create a path: This is the trajectory along which the profile will be moved. It could be a straight line, a curve, or a complex 3D path.

3. Apply the Sweep command: In your CAD software, there will be a command or function called "Sweep" or something similar. You need to select the profile and the path, and then apply this command.

4. Adjust parameters: Depending on the software, you might have options to adjust the orientation of the profile as it moves along the path, or to scale the profile along the path.

5. Finalize the shape: Once you are happy with the preview of the swept shape, you can finalize it to create the 3D object.

This technique is commonly used in CAD software like AutoCAD, SolidWorks, and Fusion 360 to create complex 3D shapes like springs, twisted structures, and more.