Topology optimisation determines the best material distribution given an optimisation objective and a set of constraints. This is done by importing a part concept and removing material from it to minimise or maximise an optimisation objective such as mass, displacement or compliance while satisfying a set of constraints such as maximum stress or displacement. This type of optimisation can lead to some very new and complex shapes that are subsequently produced using additive manufacturing. In the past, it was often impractical to produce particularly complex shapes due to the limitations of traditional manufacturing methods. However, newer processes, such as additive manufacturing, have enabled the widespread use of highly complex designs.