
Use the Construct→Offset Plane tool to make
aligned surfaces on which to draw the sketches.
(Figure
R
).
You can adjust the loft’s appearance by dragging
rails created during the loft to new positions, or by
dragging the shape of the sketches. You can also
add rails of your own between the sketches. The
rails can be a centerline, which is an option in the
dialog box, or ones you draw.
Rails are kind of tricky to draw because they must
touch all the lofted profiles to work. To that end,
it’s helpful to place points on each sketch with the
Construct menu’s Points tools, such as Point at
Vertex and Point Along Path. Enable 3D sketching
by checking ...