Is it true that overlapping lines must be trimmed away and extra lines removed to successfully create a solid shape?

Creating a solid shape in CAD software like Solid Edge requires that the sketch or profile used for the solid is clean and free of any overlapping or extraneous lines. Overlapping lines can create ambiguity in the geometry, leading to issues during the solid modeling process. When these lines overlap, the software may not understand the intended shape, which could result in errors or unintended outcomes when the solid is generated.

Similarly, extra lines that do not contribute to the overall geometry must also be removed. This helps ensure that the shape being created is precisely defined. Clean geometries allow the software to accurately interpret the intended boundaries of the solid, ensuring proper development of features and avoiding complications during operations such as extrusion or lofting.

In this context, the importance of having a clean and non-overlapping sketch is essential for achieving successful solid modeling results. Therefore, it is true that for solid shapes to be created effectively, any overlapping lines must be trimmed away and additional unnecessary lines must be removed.