(2) Double-click the red layer with the left mouse button, and set the material, thickness, and process to Tilia wood broad, 3mm, and cutting respectively; Double-click the yellow layer with the left mouse button, and set the material, thickness, and process as Tilia wood broad, 3mm, and shallow carving respectively; double-click the black layer with the left mouse button, and set the material, thickness, and process to the Tilia wood broad, 3mm, and cut respectively, as shown in the following picture: