The Lattice Deformer
A simple deformer, such as a Bend or Flare, will get you only so far; when a model requires more intricate editing with a deformer, you’ll need to use a lattice.
A lattice is a scaffold that fits around your geometry. The lattice object controls the shape of the geometry. When you adjust the Lattice deformer, the geometry deforms to match. When a lattice point is moved, the lattice smoothly deforms the underlying geometry. The more lattice points, the greater control you have. The more divisions the geometry has, the more smoothly the geometry will deform, as you saw with the bending cylinder in the previous example.
Lattices are especially useful when you need to edit a relatively complex poly mesh or NURBS surface that ...