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Proceedings of the International Conference on Digital Manufacturing –
                                         Volume 1

               enclosure achieved higher and more stable ambient temperatures,
               peaking at 69 °C and maintaining above 65 °C. The blockboard
               enclosure, although peaked at 66 °C, showed a gradual decline.
               The superior  performance of PMMA is attributed to its lower
               thermal  conductivity and  better infrared heat retention. While
               blockboard is a  viable and  cost-effective option, PMMA
               enclosures offer enhanced thermal control, making them ideal for
               temperature-sensitive prints.

               Keywords:  3D Printing Polymethyl Methacrylate (PMMA),
               Blockboard, Fused Deposition Modelling  (FDM),  Ambient
               Temperature.


               INTRODUCTION

               Maintaining consistent ambient temperature is critical in Fused
               Deposition Modelling (FDM) 3D  printing  as it  directly affects
               print quality and dimensional accuracy  (Winters &  Shepler,
               2018).  Fluctuations in environmental  temperature,  typical in
               open-frame printers, often result in print defects such as warping,
               poor interlayer adhesion, and dimensional instability, especially
               in temperature-sensitive  materials like  Acrylonitrile Butadiene
               Styrene (ABS) (Ngo, Kashani, Imbalzano, Nguyen & Hui, 2018;
               Dawoud, Taha & Ebeid, 2016). To mitigate these issues, printer
               enclosures are commonly employed to maintain a stable thermal
               environment, yet the effectiveness of enclosure materials remains
               an area of  ongoing research  (Jaber, Saleh & Ibraheem, 2025).
               Previous studies highlighted the importance of enclosure design
               and material selection in  optimising  FDM  print  quality.  For
               instance,  Colosimo (2020)  demonstrated that enclosure
               temperatures significantly influence the mechanical properties
               and  dimensional accuracy  of printed  parts, emphasising that
               higher and more stable enclosure temperatures can considerably
               reduce warping and enhance part quality. Despite these insights,
               comparative research specifically addressing the performance of
               different  enclosure materials such as Polymethyl Methacrylate
               (PMMA) and blockboard remains scarce.





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