In Finite Element Analysis, the characteristics of the mesh (quality and classification) play a major role in the final result; such characteristics include: mesh quality, kinds of elements, mesh refinement, and many others. It is true indeed that commercial softwares are able, often with good results, to create meshes for basically any kind of components. These softwares, however, present a fundamental limitation. They are not open-source: this means that their code is not directly available to the consumer and can not be modified in order to adapt the meshing process to specific cases and requirements. In specific applications, after the mesh is generated automatically by one of these softwares, it requires to be modified by hand for it to meet the required characteristics.