Geometrical and Dimensional Accuracy of Pine‐Based Polymer Composites Produced by FDM

Fused deposition modeling (FDM) is the most widely used additive manufacturing technology due to its simplicity and undeniable advantages. In the current context, marked by the orientation towards a sustainable bioeconomy, research focuses on the development and use of biodegradable materials, of which wood‐polymer composites (WPC) have gained increased interest in recent years. The purpose of this work is to investigate the dimensional and shape accuracy of parts made by FDM technology from a wood‐based polymer, with an emphasis on the accuracy of the holes and the quality of the surfaces obtained. The research methodology is based on a complete factorial plan, analyzing the influence of some process parameters on the performance of the parts. The results are compared with those obtained for similar parts made of PLA under the same printing conditions. The findings highlight the critical factors that influence geometric accuracy and surface appearance, highlighting the advantages and limitations of using sustainable materials in additive manufacturing.