2. Define the required parameters on the Lattice Region tab, the Cell Type tab, and the Cell Fill tab.

3. Click the Density tab.

4. Under Variable Beams, click New set. A new set is created.

5. To define references around which the varied density lattice is created, click the References collector and select or define any of the following: a combination of surfaces, quilts, edges, vertices, curves, curve ends, axes, points, and coordinate systems.

6. To define the distance from the reference where the lattice with varied density is created, next to Distance, type a value. The distance sets the size of the volume region around the reference you chose.

7. To define the cross section size of the beam on the reference, click Target cross section size and type a value. The cross section of the beams varies between the value of Target cross section size on the Density tab, and the Cross section size value that is defined on the Cell Fill tab.

8. To set the rate of change for the density, next to Size change rate, type a value.

9. To define the cross section size below which lattice is not created, set the value of the Cross section cutoff. The Cross section cutoff value must be between the size of the cross section of the beam, as defined on the Cell Fill tab, and the size of the varied density, as defined on the Density tab.

10. To allow beams to have a varied cross section size, select Continuous variability. When this option is clear, each beam has its own straight cross section.