2. Click the southwest isometric view in the view toolbar, switch to the southwest view, click the cuboid tool, and draw a cuboid model, as shown.

3. Switch to the front view, click the circular tool to draw a circular pattern, as shown, and move it to the rectangular box model.

4. Click the stamping tool, and then click to pick up the cuboid and the circular pattern in turn to generate the circular stamping pattern.

5. Click the Stretch tool, select the outer surface of the circle and stretch it.