Advanced Materials Technologies

3D Printing News Alert(3D printed flexible mesh for ankle and knee braces)

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3D printed flexible mesh for ankle and knee braces. According to Sebastian Pattinson, who conducted the research as a postdoc at MIT and associate professor of mechanical engineering A. John Hart, “This work is new in that it focuses on the mechanical properties and geometries required to support soft tissues.3-D-printed clothing and devices tend to be very bulky. We were trying to think of how we can make 3-D-printed constructs more flexible and comfortable, like textiles and fabrics. The beauty of this technique lies in its simplicity and versatility. Mesh can be made on a basic desktop 3-D printer, and the mechanics can be tailored to precisely match those of soft tissue.”

http://news.mit.edu/2019/3-d-print-mesh-ankle-knee-braces-0619

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3D Printed Rocket Engine Combustion Chamber

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According to Engineers at Marshall Space Flight Center, “it records the test-firing of a 3D-printed combustion chamber. Researchers are exploring advanced additive manufacturing solutions, introducing higher-performing alloys and refined printing processes.”
We are curious, so from some comments,
3D printed? From what material? How?
What kind of printer? Is there a video of printing this engine?
How does one hemisphere constitute one chamber?

 

https://www.nasa.gov/centers/marshall/news/news/releases/2019/nasa-and-virgin-orbit-3d-print-test-rocket-combustion-chamber.html.