You wrote. "We strive to change the way the world uses 3D printers, implement 3D printing on a blockchain, and provide content for 3D design for printing.". But, such printers are different. You can now print on them and the weapon and the house. And why is it bad?
3D Printing is great! Our goal is to make 3D printing mainstream and help provide a range of consumer goods and alternatives to traditionally manufactured products.
