He never mentions what the part is going to be used for, but at 376 x 376 x 250mm (14.8 x 14.8 x 9.84in), he estimates that this is the biggest single part printed with a DIY 3D printer.

U.S. Army researchers have devised a method to produce ceramic body armor, lightweight but strong, from a 3-D printer. Except that 3-D printers are meant to print out knickknacks, not flak jackets.

Meanwhile, on the building front in general, 3D printing is already being used as we recently saw with the largest (two-storey) 3D-printed building ever constructed over in the United Arab Emirates.

This is the beginning of 3D printed flexible armor, a great method for cosplay builds, and a really cool way to add another trick to your 3D printing toolkit. Hexagons tesselate.