Packer Tool creates a geometry manager object for packing and aligning objects. The tool has one control option: Orientation. When Orientation is set to Detect, the tool finds out the axis along which the pivot points of the selected objects have been aligned, and packs the selected objects to that axis. The user can also explicitly select one of the packing directions X, Y and Z.

After the tool is started, the user can define the direction and size of the packer box with two mouse clicks. The first click position defines the corner, which does not move when packer dimensions are later changed. If the tool is accepted before the box is drawn, the packing directions are taken from the first selected object.