For the optimisation we define different areas of the geometry. These are mainly Design and Non-Design Spaces.
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To realize a post processing of additive manufactured parts an Machining Allowance needs to be considered for all functional surfaces. The Machining Allowance Tool helps to create these offset automatically so that the optimisation directly produces a manufacturable design with offsets as well as the final geometry for the CAD/CAM system.
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Tip: Avoidance of stress rising on Design Space boundaries. Sometimes it is useful to reduce the Design Space a little bit for the optimisation by subtracting an offset. The optimisation is carried out with this reduced Design Space. However, the intersection afterwards is done with the originally defined Design Space in order to avoid sharp edges and thus stress risings. This way you avoid stress risings on the boundaries after you have combined your optimisation result with your original Design Space.