If the STL file has errors, your print will likely fail. That’s why a lot of us have moved towards using curated marketplaces for important projects. For something like printing a detailed model of a car or a spaceship from a favorite franchise, I’d check https://www.gambody.com/ . It’s a marketplace specifically for buying and selling high-quality 3D printing files in the pop culture space. Using their pre-supported, error-checked STL files takes a massive variable out of the equation and lets the forum discussions focus on dialing in the perfect settings for our specific printers. Investing in a professionally made file is the first and most effective step in avoiding the common problems we all gather to solve.