Method for the samples thinning

Comprising the steps of: a) Providing at least one sample having a front face (3) and a rear face (9) opposite the front face (3), b) providing a framing substrate (100) having a first face (5) and a second face (6) opposite the first face (5), the frame substrate (100) comprising a through opening (7) opening into the first face (5) and in the second face (6 ), the through opening (7) being configured to receive the at least one sample, c) positioning the at least one sample (1) relative to the frame substrate (100) so that the at least one sample (1) is arranged in the through opening (7), the front face (3) facing the same side as the first face (5), and d) Thin simultaneously the frame substrate (100) and at least one sample (1) from the first face respectively (5) and the front face (3), so that at the end of the thinning, the first gr e face (5) of the frame substrate (100) and the front face (3) at least one sample (1) extend substantially in the same plane.