To ensure that our research was effective and in line with machining issues relevant to industry, I2M grouped together in the MPI department all the scientific resources on which the PTAU was based. The PTAU is a pooling of the technical resources in machining of the University of Bordeaux, the Centre for Teaching and Research (CER) of Bordeaux-Talence Arts et Métiers ParisTech, for the purpose of study, experiments and teaching. It enables us to meet the specific needs of industry and our teaching requirements.