Related:
https://news.ycombinator.com/item?id=9109968 Australian researchers create world's first 3D-printed jet engine (abc.net.au)
https://news.ycombinator.com/item?id=9111239 Australian engineers 3D print jet engine in world first (theage.com.au)
https://news.ycombinator.com/item?id=9112052 Australian researchers create first 3D-printed jet engine (theguardian.com)
https://news.ycombinator.com/item?id=9519471 Watch: Engineers 3D Printed a Model Jet Engine, Then Started it Up (gereports.com)
https://news.ycombinator.com/item?id=9533954 GE 3D-Printed a Miniature Jet Engine That Runs at 33,000 RPM (gizmodo.com)
https://news.ycombinator.com/item?id=9534688 3D Printed Mini Jet Engine (gereports.com)
https://news.ycombinator.com/item?id=9542996 3D-printed mini jet engine revved up to 33,000 rpm (cnet.com)
https://news.ycombinator.com/item?id=9544673 A 3D-printed mini jet engine that performs at 33,000 RPM (kurzweilai.net)
https://news.ycombinator.com/item?id=9569304 GE Engineers 3D Printed a Mini Jet Engine, Then Took It to 33,000 RPM (gereports.com)
OK, I'm going to try real hard to stop now. The number of repeated stories is comparatively small, but I'm finding it impossible it ignore them, so I'm going off HN and using my homebrew filter system to control the firehose and remove the duplicates.