Construction Entities

In SOLIDWORKS, any sketch entity can be specified for construction. Points and centerlines are always construction entities only.

Use a centerline as the axis about which a sketch revolves to create a base feature, or to mirror sketch entities.

SOLIDWORKS also has Reference Geometry (planes, axes, and coordinate systems) as a basis for creating features outside of sketches.

Use planes to construct a series of sketches as the basis for a loft feature.