Global approach to design and manufacture Direct Parts

At this stage, Pi(C) and Sj(C) defined are evaluated and compared in terms of manufacturability and mechanical behavior. For example, a good preform simplifies material deposition, limits the use of wire or powder, is easy to manufacture and have a great mechanical skill to resist to thermal strain. A good support is easy to manufacture and limit the use of manufactured supports. The next step started only with interesting ones.