Navy Seabees face mask

‘We can crank these out’ — Navy Seabees 3D-print 2,500 masks a day for sailors

“It feels fantastic to feel like you’re making a difference."


The Army can now 3D-print body armor on the fly

3D printers are meant to print out knickknacks, not flak jackets — which meant that engineers had to hack into the printer to get the job done