for what purpose dibolo command is used in cattia .......?

A diabolo is a typical problem in "body in white" constructions, if you want a connection between a seat surface and a "basic surface".

  1. Step 1:

    select the seat (blue) surface.

  2. Step 2:

    select the base element (you see already the result: The diabolo)

  3. Step 3:

    you can change the necessary draft angle

  4. Step 4:

    a typical "diabolo" is shown in this picture.