Lattice Structure Design Lab
Step 5 - Add Thickness Gradient
Lattice Commander allows you to create and modify individual lattices, wall sections, and skins.
Repeat step 3 and regenerate the lattice
Select lattice under Lattice Commander
Select Add Thickness Gradient
Position the places to isolate the center of the part
Set the start thickness and end thickness to 4 mm
Use the view cube to position the planes form different angles.