Accuracy in Additive Manufacturing (AM), from the CAD design to the printing process, is not always easy to deliver. Companies are working hard at trying to ensure consistency and repeatability throughout the entire manufacturing process since today much more is required of AM systems who need to turn out functional goods that can meet traditional manufacturing standards while being cost-effective in order to be even more competitive. Some common 3D printing problems arise on the way to achieving the desired original design, so before a 3D printed metal part leaves the factory, it has probably undergone some kind of post-processing to smooth and perfect the surface. For example, if Direct Energy Deposition (DED) metal 3D printing was used, this typically produces near-net-shape parts that must be CNC machined, but other forms of AM also require some type of smoothing close to the end. And even when all that is done, the part might not fit or work as originally intended. In some cases, parts are predeformed in order to compensate for inaccuracies during the process. All this basically means that engineers and specialists will need to go back to review the CAD design and processes...