Method/Step 1 Click the arrow to the right of the material-the material in the model (small house icon)-and click "Clear the unused items". Of course, if there is gray, it means that there is no excess material to be removed.
If we don't want that much memory, for example, remove the characters in the picture. Click on the material and find that "Clear Unused Items" is still gray.
At this point, find the window component. Also click on the small house and all the components in the model will appear. Click the arrow next to it to clear "Unused Items" in the same way. This step is to remove unused components.
Now, we can clear the unused items by going back to the first step.
Finally, the cleaned model can be obtained.
In fact, you can also open the window-Vehicle Information-Statistics Information. Clear unused items.