International Journal of Engineering and Technology

Nowadays an application of Additive Manufacturing (AM) has been employed in Investment Casting (IC) for the direct casting process (DIC). The DIC was designed to assess the performance of portable Fused Deposition Modeling (FDM) fabricated acrylonitrile butadiene styrene (ABS) pattern material as the sacrificial pattern for IC process. Increasing demands on AM’s technique has raised the fabrication of portable FDM printers. However, the quality level of pattern made from the portable FDM printer is still not been categorized. In this study, it focus on comparison in between sacrificial pattern of FDM ABS fabrication with the final product of IC. There were three different inner structure patterns of FDM ABS which are hollow, square and polygon were used as a benchmark. The analysis results identified that hollow internal structure shows the highest percentages in dimensional accuracy and flatness during pattern fabrication. In addition, FDM ABS square internal structure shows the lower percentages in dimension accuracy and highest flatness but inversely result after the investment process was done.