In a sweep, which part defines the path?

In a sweep operation in SolidWorks, the path that the profile follows is defined by the guide curve. This guide curve provides the three-dimensional path that dictates how the profile or section of the object will be shaped as it moves along that defined route. The relationship between the guide curve and the profile sketch is crucial because the profile is not simply placed along the path; instead, it can rotate or adjust to the curvature and changes in direction along the guide, allowing for more complex shapes and designs.

The profile sketch is important as it provides the shape that is being swept along the path, but it is the guide curve itself that dictates the flow, direction, and movement of the profile throughout the sweep. Without the guide curve, the sweep would not have a defined movement, essentially rendering it ineffective for creating a complex shape.

In contrast, the end point of the sketch and the dimensioned length are related to dimensions and placement but do not directly determine the pathway for the sweeping action. Therefore, it is the guide curve that is essential for defining the actual path in a sweep.