3D printing in the production of furniture and interior elements

The article examines the characteristics inherent to the process of manufacturing furniture and interior elements using additive manufacturing (3D printing). The main technological processes (FDM, SLA, SLS) are analyzed, and the role of the digital workflow from CAD modeling to post-processing of finished products is demonstrated. As an example, an RPET/DPFNP filament derived from recycled polyethylene terephthalate and date palm nanoparticles is investigated for FDM printing of furniture prototypes. The advantages of using recycled and bio-based composites in the furniture industry are presented. The methodology ensures reduced production cycles, decreased waste, and opens new opportunities for small-batch, personalized furniture manufacturing. The information presented in the article will be of interest to researchers and lecturers in additive manufacturing and materials science who are developing new polymers and composites for high-strength, aesthetically versatile 3D-printed decor, as well as to design theorists and ergonomics specialists seeking to integrate personalized interior solutions within the context of sustainable production. Furthermore, practical process engineers in the furniture industry and startup initiatives in digital prototyping will be able to glean important insights into process scalability, optimization of topology-optimized structures, and the economics of additive manufacturing.