•
Switch into Loft Surface Creation mode by
pressing the Loft Mode Tool 
or by selecting "Loft Mode" from the
Surfaces sub-menu (ribbon toolbar’s Create Tab).
The cursor will change to the loft surface cursor.
• Select the first object to loft through from a photo, 3D view or table. Object types that can be used to define a loft are curves, lines and edges.
The selected object will highlight.
• Select the second object to loft through from a photo, 3D view or table.
The second object will highlight and if the selected objects are 3D the surface will be displayed in 3D.
If the line, edge or curve you select is
not added to the loft in the direction you need you can use the "Reverse
Last Object" tool 
,
located on the Surface sub-menu (ribbon toolbar’s Create
Tab), to reverse it.
• Continue with selecting objects to complete the path.
As you select more objects for the loft if they are 3D they surface being created will update. Note: if you make a mistake when selecting the objects to loft through if you click on the last object in the loft it will be remove from the loft.
• When you are finished you can either select "Finish Surface" from the right-click or surface menu, or to close the loft you can click back on the first object in the loft or select "Close Surface" from the right click or surface menu.
Note: the direction a loft faces is determined by the direction of the objects being lofted through. If the surface you create does not face the direction you would like you can use the "Flip Surface(s)" command, located on the surface sub-menu. This command will flip the currently selected or, if no surfaces are selected, the last created Surface. Surfaces also have a "double sided" property that will mean a surface 'faces' in both directions. See Surface Properties.
Also note that if you are lofting through curves, the way a curve has been defined will affect how the surface will look, especially when using closed curves. For a smooth loft surface, try to define your curves such that the curve starting points are aligned, and that all curves are defined in the same order and direction. This helps with the surface calculation, starting from the start points of each defining curve.