You're all right that safety isn't just an option anymore, and it seems like manufacturers are well aware of this fact and supporting this trend. Rockwell also just came out with some tools to help engineers navigate safety as they are designing machines: http://www.designnews.com/document.asp?doc_id=262277
Researchers at Lawrence Livermore National Laboratory have published two physics-based models for the selective laser melting (SLM) metals additive manufacturing process, so engineers can understand how it works at the powder and scales, and develop better parts with less trial and error.
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