Quote Originally Posted by CarterTG View Post
Not all 3D models are constructed the same. Depending on the creator, some were destined ONLY for visual effects where the model consists of a series of shells -- good enough to create 3D animations. Others may have been modeled with a more faithful internal structure (chassis, B-pillars, subframe) but even then, it's possible those subcomponents are not watertight.
Most folks new to 3D printing don't get this right away. They need to.