"Larger than most cars, Voxeljet’s 3-D printers build models using…

"Larger than most cars, Voxeljet’s 3-D printers build models using silica sand and are capable of producing sandy sculptures that weigh up to 12 tons while maintaining a barely perceivable 0.13 millimeter layer thickness."

https://www.wired.com/2013/10/designers-build-industrial-strength-sand-castle-with-3-d-printer/