You shouldn’t be surprised at how many CAD companies are listed in the results of a search for “dumb solid model“: an assembly hierarchy is often thought to contain enough design intent that sharing an assembly file will reveal intellectual property. Exporting the model as a polygonal file such as STL is one of the steps designers resort to, but given the loss of fidelity that entails, there are better options. Read this short article on how you can easily use them. Start with any CAD format as input and create one or more of several different formats.