First of all, thank you very much for your answers. In my program I created two areas, namely the workpiece area and the tool area. The lattice constant of the tool region is 3.5656, and the lattice constant of the workpiece region is 5.431. I haven’t changed the lattice constant of the tool area, but only the crystal plane and crystal orientation of the workpiece area. Does the change in the lattice distance of the workpiece area affect the lattice constant or lattice distance of the tool area?