Page 60 - eBook_Proceedings of the International Conference on Digital Manufacturing V1

Proceedings of the International Conference on Digital Manufacturing –
Volume 1

Figure 10: The ambient temperature profiles for all three setups

When comparing average ambient temperatures, the PMMA
enclosure consistently recorded the highest values, maintaining an
average in the range of 68–69°C. The blockboard enclosure
followed closely, averaging between 63–65°C. Looking at peak
temperatures, the PMMA enclosure again outperformed the
others, reaching a maximum of around 70°C while the blockboard
enclosure reached a slightly lower peak of approximately 66°C. In
terms of temperature stability, the PMMA enclosure demonstrated
the narrowest fluctuation range of only about 2–3°C indicating a
highly controlled thermal environment. The blockboard enclosure
showed similarly good stability, with fluctuations in the range of
3–4°C. As for minimum recorded temperatures, the blockboard
enclosure reached a minimum of about 53°C, while the PMMA
maintained the highest minimum temperature at around 57°C
before the printer began its cooldown sequence.

Figure 11 presents a visual comparison of the printed samples
produced under three enclosure conditions: PMMA (acrylic), and
blockboard. Each image highlights key differences in surface
quality and visible print defects.

44