Menu: Geometry->Edit->Volume boolean op.
The GiD Volume Boolean Modeler has been designed to accomplish geometric feats such as physically punching a hole through a volume, combining several volumes into one, and creating a new volume from the intersecting part of several separate volumes.
The valid volume boolean operations are:
- Union: Fuses several volumes wherever they intersect to create a single, more complex volume.
- Intersection: Creates a volume based on the intersecting points of several separate volumes.
- Subtraction: Negates a specific portion of a volume to create a hole or indentation.
- Subtraction and intersection: Creates the intersected and the substracted volume at the same time.
Note: First the volume where to substract must be selected, then the volumes to be substracted (order is important when dealing with subtraction).