Abstract
This research work is aimed at the development of biomedical implant (hip joint) by combination of fused deposition modelling (FDM) and investment casting. Three controllable factors of the investment casting process (namely slurry layer combination, viscosity, dry time of primary coating) were studied at three levels each by Taguchi’s parametric approach, and single-response optimization was conducted to identify the main factors controlling dimensional accuracy (Δd). ABS patterns to be used for investment casting were made with FDM process, and castings were produced using stainless steel at recommended parameters through ceramic shell investment casting process. The results of the study suggest that for Δd, contribution of viscosity of primary dip and dry time of primary coating is 23 and 72 %, respectively.
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