What is the minimum number of guide curves required to create a loft?

To create a loft in SolidWorks, it is possible to do so using just the two profile sketches without any guide curves at all. When you define a loft, the software can interpolate a smooth surface between these profiles based solely on their geometry. This means that if you have two or more closed profiles, you can proceed with the loft feature without the need for additional guide curves.

Guide curves are optional and are used primarily when you want more control over the loft shape, particularly when the profiles are quite different in geometry or when you want the loft to follow a specific path. However, they are not a requirement for creating a basic loft, which is why the statement about the minimum number of required guide curves being zero is valid.

Having a deeper understanding of loft features will reinforce the flexibility of SolidWorks in various modeling scenarios, allowing users to choose the most effective method to achieve their desired designs.