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The purpose of this paper is to develop a methodology for optimising the shape of automated sacrificial support fixture (SSF) design, so as to machine a part with thin ends (like the hip joint) using a rapid machining process. A sacrificial support fixture is created at the ends of the part to give support to the part during machining. Finite element analysis (FEA) is used to optimise the shape of sacrificial support fixture for the machining of a part via computer numerical control rapiddoi:10.21278/tof.43305 fatcat:jrgo7zfu6jchvle24hfqyn4p3a