1, the first step, open the ZBrush software, you can see some model windows in the window, click the left mouse button on the standard 3D model folder, as shown in the figure below, and then enter the next step.

2. Secondly, after completing the above steps, you can draw a diagonal rectangular box made of metal in the view, as shown in the figure below, and then go to the next step.

3. Then, after completing the above steps, use the [Rotate] button in the left mouse button menu toolbar to rotate the corner cube in the view area into an angle, as shown in the figure below, and then enter the next step.

4. Then, after completing the above steps, right-click the Copy button in the toolbox on the right, as shown in the figure below, and then go to the next step.

5. Then, after completing the above steps, click the "Paste" button in the toolbox on the right, as shown in the figure below, and then enter the next step.

6. Finally, after completing the above steps, the desired results are obtained, as shown in the following figure. In this way, the problem is solved.