The introduced paper is focused on monitoring the surface treatment of the Polyvinyl Butyral (PVB) samples. Surface treatment is an inseparable part of postprocessing techniques. Additive manufacturing technology has countless definitions, but it can be concluded that this technology is revolutionary and conventional and is a fundamental part of Industry 4.0. Since technology has rapidly evolved and spread in almost every industry the requirement for its quality is getting to be more meaningful and relevant. The basic evaluation of quality needs is challenging and unquestionably will be in the future. Postprocessing techniques are becoming an integral part of additive manufacturing and the resulting quality of manufactured products. Consequently, several peculiar techniques are applied to boost and upgrade the final surface quality or mechanical properties of printed samples. The fundamental target of the given paper is to enhance the resulting quality of fabricated specimens using Fused Deposition Modeling (FDM) technology. The chosen filament for the 3D printing process is Polyvinyl Butyral, which has remarkable mechanical properties. From various postprocessing techniques, which are usually used we had chosen chemical smoothing, which is a part of surface treatment postprocessing techniques. For the proposed research were fabricated four specimens for chemical smoothing in an electrical device designed for this specific surface treatment Polysher. The results were obtained from the measurement of each specimen and its layer height from a digital microscope Keyence VHX7000. According to measurement, it can be concluded that chemical smoothing can affect the overall surface quality.