9 Downloadable software for operating 3D printers; downloadable computer software for use in receiving and manipulating 3d model file data for fabrication of 3d embodiments on a 3d printer; downloadable computer software used for transmission of 3d file data for printing on a networked 3d printer; downloadable computer software for operating and monitoring a network of 3d printers; downloadable computer software for use in 3d designing, 3d printing, and 3d manufacturing, and analyzing, pricing, sharing, online displaying and ordering of parts, prototypes, and models related thereto for personal and commercial use