Shell
Modify > Shell
Description:
The Shell (Modify
> Shell)
tool allows you to give thickness to the individual polygons of an
object by making a shell of new polygons which mimics the shape of the
object but is displaced slightly. This operation is useful, for example,
in giving thickness to the walls of a modeled house or to a character's
clothing. When the command is executed, the tool manipulator will load -
dragging on its handles will adjust the thickness of the shell. Press
Enter or right-click to create the shell and exit the tool.
Notes:
-Shell can only be
performed in object selection mode.
-Shell is different from simply scaling a copy of the geometry, because
all of the new polygons move along the direction of the original
polygons' normals.
-There are many
situations in which it is mathematically and logically impossible for
the Shell operation to work as you may wish. You cannot perform a
shell operation when one or more of the edges in the shape has more than
two faces attached to it.
- All of the object's face normals must be oriented in the same
direction ("in" or "out") for Shell to work properly. Use the Reverse Normals command to change the
normal vectors for selected faces.
