2. Define the required parameters in the References tab, the Cell tab, and the Beam tab.

3. Click Density. The Density tab opens.

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 References 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 size of the volume region where the lattice with varied density is created, click Distance and type in 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 Ref Cross Section Size and type a new value. The cross section of the beams varies between the value of Ref Cross Section Size in the Density tab, and the value that is defined in the Beam tab, under Cross Section Size.

8. Set the value of Rate of Size Change.

9. To create a lattice that does not occupy the entire volume, set the value of the Minimal Beam Size. The Minimal Beam Size value must be between the size of the cross section of the beam, as defined on the Beam 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 Tapered Beam. When this option is clear, each beam has its own straight cross section. The following beam has a different cross section.