If you need to deal with 3D projects or models frequently, then you often need to convert between multiple 3D file formats, so as to operate proprietary file formats supported by other 3D software in your 3D software. In this case, what you need is a 3D file conversion tool. If you have used FinalMesh, 3D Object Converter, you can also give Spin 3D a try.

If a 3D scene has a large number of polyhedral models, not only will this cause the reading and displaying speed of the entire scene to become significantly slower, but also the file size will become too large. Fortunately, the mesh of 3D models often comes with a lot of unnecessarily and complex geometries that can be simplified without compromising the model's detail and quality. At this point, we can ask help for Polygon Cruncher.

MeshLab is a free, open-source, portable and extensible three-dimensional geometry (3D meshes) processing system that was developed by the ISTI-CNR research center from Italy, and first published in late 2005. It is mainly used to perform interactive processing and unstructured editing to three-dimensional triangular meshes on Windows, Linux and Mac OS X, and has become popular in many technical fields of 3D development & data handling.