Select a Loft object. > Modify panel > Deformations rollout > Scale
You can loft objects such as columns and bugles from a single shape that changes only its scale as it travels along a path. Use Scale deformation when you want to make these types of objects.
Tip: By animating scale, a loft object can appear to travel along a path. Using this technique, you can create animations in which letters or lines write themselves onto the screen.
These are the properties of Scale deformation curves:
The two curves are red for X-axis scaling and green for Y-axis scaling.
Default curve values are at 100%.
Values greater than 100% make the shape larger.
Values between 100% and 0% make the shape smaller.
Negative values scale and mirror the shape.
See Deformation Dialog for specific information on the dialog controls.
Scale deformation curve
Using scale to deform the lofted roadway
Procedure
To use Scale deformation:
Select a loft object.
Click Loft in the modifier stack display.
Click Scale on the Deformations rollout.
Edit the deformation curves for the X axis and Y axis.