What command is used to create circular features in a part?

The command used to create circular features in a part is the "Revolve" feature. This feature allows you to create 3D geometry by rotating a 2D profile around an axis. The profile can be any closed shape, and when revolved, it produces a solid that has circular symmetry. This is particularly useful for creating components like cylinders, discs, or any object that has a rotational aspect.

For example, if you were to create a wheel or a gear, you would sketch the profile of one side of the feature and then use the revolve command to spin that profile around a central axis, resulting in a complete circular feature.

In contrast, the "Extrude" feature is primarily used to add thickness to 2D sketches by extending them linearly in one direction, which does not inherently create circular geometry. The "Loft" feature is designed to create shapes by connecting multiple profiles that might not be circular and can vary in size and shape, focusing on the transition between them rather than creating circular features. The "Fillet" feature, on the other hand, is used to create rounded edges or corners on existing 3D geometry rather than starting a new circular feature from a profile.

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