How to easily bend an object

  1. Select your object and go to the modifiers window and select simple deform modifier.
  2. Choose bend and play with the angle to deform.
Note -1

If you realize that it deforms strangely, remember to apply the transforms first and check that your face normals are correct. *( outside and back face ).

Note -2

If you have a closed object, make sure that it is "solid", completely closed. Even if it had invisible faces with an other, touching object. Because or else, you may have issues during the deformation.