Creating a 3D Model with Tinkercad - 3D Printing: Build your Own 3D Printer and Print your own 3D Objects - page 133

Figure 7.7 Rotate the object on the Z axis.
If I rotate the workspace view a bit, I can see that the Round Roof object is floating
above the workspace, as shown in Figure 7.8 . I need to lower it a bit, and I use the
Align feature (refer back to Chapter 6 if you need help) to align the two objects
using the workspace that the rectangle is resting on.