Ever created an animation in SolidWorks composer and the ground did some strange things. This quick tip will hopefully solve these problems for you. In our composer training sessions we create this little animation using keyframes. However, what if I wanted some ground? Well, easy. Go to zero seconds and turn the ground on. Perfect. Oh, but why does the part look like it's hovering? And when I play. Why does the ground both move up and also get smaller? Well, because there are a couple of options that people miss when they want to set up the ground. First, the height of the ground. If I zoom out, you can see there is a cup. This looks like it's hovering as well. The cup has a square boundary box around it, and because it has an angle, the boundary box is lower than the actual geometry of the cup, and therefore the ground has gone to the bottom of that boundary box. The reason for this is the auto height is on. Turn this off and then select. Proceed on the set height on geometry and it will jump to the bottom of the cup. Great, but that's still not in the right position for the coffee machine. We can either manually pull it up using the graphics handles in the middle of the ground, or hide the cup. Use the set height on geometry option and then show the cup again. Because the auto height is turned off. We should now have the ground in the correct location. However, when the cup comes in, you can see the ground shrinks in size. Just like the auto height. We need to turn some auto options off at zero seconds so the ground is kept constant throughout. So in the ground properties there is an auto size which sizes the ground automatically to fit the visible actors, and auto center, which centers the ground automatically to fit the visible actors. Both of these, as well as the auto height, can be controlled with the auto fit option. Turn this off. Control the ground manually. And your animation will look a lot neater. Know.