The GE talk said that the single biggest problem GE was having with EBM is getting trapped powder out of passages, so that sounds like a good step. The passages in fuel nozzles are critical to the core of the design , but in other parts may be secondary.
Engineers are like the rest of us, both a beneficiary of our experience from the past but also trapped by it when something really new comes along. It is going to take time, senior designers may never adopt, we may need a new generation.
Much like the da Vinci robot was for prostatectomy. Older urologists mostly downplayed it , it took took younger men on the way up , men with not so much invested in conventional thinking and doing , to lever it to a point where it is now the standard.
It is impressive that GE is doing so much 3DP without any parts in actual production yet. And that they see so many opportunities that even a giant like GE will need to collaborate with others. This plus all the free research Arcam EBM process is getting confirms to me that engineers and scientists who know a lot more than I do see a great future for EBM, particularly in aerospace
