Reply To: Z Axis – Surface

…and when you use the Active Tool from the Toolbar, it starts to make the surface of the Cube and snaps it by default to the Surface of any Object, or if there is nothing to snap to, it falls back to snapping to the Grid. You can change the settings to start at the Origin (center) of the Cube (or other Primitive):

This way of Adding Primitives is being shown later in this lesson.