New vacuum tech slashes porosity by 75 percent in large-scale 3D prints

Researchers at Oak Ridge National Laboratory developed a vacuum-assisted extrusion method for large-scale 3D printing that reduces internal porosity by 75%. This breakthrough addresses a major challenge in additive manufacturing, potentially enabling stronger and more reliable printed components for aerospace, automotive, and defense industries. The technique removes trapped gases during printing, significantly reducing voids and improving part strength and consistency.