How do I clean up unintended mesh inside a mesh? - Blender Stack Exchange
Blender Beginner Tutorial Part 1 - Effective Mesh Clean Up (LeoCAD imports) - YouTube
How to simplify/clean up a mesh? - Blender Stack Exchange
GitHub - Philipp-Seifried/Blender-Massive-Boolean: Blender add-on that can combine tons of objects, by running clean up steps after each Boolean operation.
chapter: Nettoyer-Son-Maillage / Blender pour l'impression 3D