What's up with AM machines this year? At the Aerodef conference, SLM Solutions' Winthrop Sheldon  takes on this and several other market-trend questions.  “You’re seeing more multi-laser systems. You’re seeing generally more open systems (in terms of parameter control and material use). And you’re also seeing larger format systems. So there are quite a few new trends that I feel SLM was instrumental in bringing to market. Now the question is can we maintain our position with these technologies—now that more of our competitors have, let’s say, multi-laser systems.”