There is a translation error in Spanish in the LOFT tool.
What in English is CENTER LINE, in Spanish is translated as EJE (axis), which leads to confusion and is also incorrect, because a curved line cannot be an axis by definition:
Axis: A STRAIGHT line around which a point rotates to generate a line, a line to generate a surface or a surface to generate a solid.
Moreover, in this case, there is no generation of anything by rotation on an axis. The center line is simply serving as a trajectory to swoop a shape in space. Even so, the axis would be the tangent line to each point of the trajectory curve, not the curve itself.
The correct translation should be LÍNEA CENTRAL.
Fusion
