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To realize a post processing of additive manufactured parts a Machining Allowanceneeds to be considered for all functional surfaces. These can be created in the Interface Tool so that the optimisation directly produces a manufacturable design with offsets as well as the final geometry for the CAD/CAM system.
Void Spaces are spaces within your part where no material is allowed to be and free space for example for other parts of the assembly is needed. These spaces can be easily created with the Access Region and Clearance Region Tools. Especially for realising Part Consolidation these Tools assist to prepare the Design Space and the geometry for the optimisation.
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Information regarding Excluded and Retained Volumes of the GD-Configuration Tool here.