What are common post-processing techniques for FDM prints?

Post-processing is an essential step in enhancing the appearance and functionality of Fused Deposition Modeling (FDM) prints. The chosen answer emphasizes techniques that are widely utilized in the 3D printing industry to refine the surface quality and aesthetics of printed objects.

Sanding is commonly used to smooth out layer lines that are a characteristic result of the FDM process. By gently sanding the surface, users can achieve a more sleek and polished look, which is often important for parts that are meant to be visually appealing or need to fit together precisely in assembly.

Painting follows sanding, allowing users to apply colors and finishes that can enhance the visual appeal or even serve functional purposes, such as corrosion resistance.

Acetone smoothing, while more commonly associated with materials like ABS, can also be applied to certain filaments to create a shiny, glass-like finish. This technique works by melting the outer surface slightly, which can remove layer lines and imperfections, resulting in a smoother finish.

Together, these methods are vital for achieving the desired finish and functionality in FDM prints, making option B the correct answer regarding common post-processing techniques.