It’s Honeywell...3D titanium aerospace parts A new 3D printed frontier
You might not be able to see the components made at Honeywell's 3D printing lab on your next flight, but these aircraft parts are lighter than ever before. Saving weight is important for any aircraft as lighter planes use less fuel and can carry more passengers and cargo.
But don't worry, these parts aren't plastic and they aren't printed on a machine you would buy for your home. These industrial machines, some at least 6 feet high, can print materials like titanium or nickel alloys with ease.
https://www.cnet.com/culture/honeywell-tests-gear-for-even-more-high-tech-planes/