3D printing is a process in which materials are successively joined and fused under computer control to form a 3D object. This is also called additive manufacturing is the act of making 3-D solid objects from a digital file. It is achieved using additive processes, which involves the laying down of successive layers of material until an object is created. Each layer can be seen as a thin slice horizontal cross-section of the final object.
With 3D printing, one can produce complex shapes using less materials than the traditional methods of manufacturing. 3D printing involves many different technologies, such as fused deposit modeling (FDM) or stereo-lithography (SLA).Contratar 3D Printing Experts
I need 400 3D Models of standard fasteners. I can provide no data. You have to research for it. At the end you should deliver 400 STL Files. There are some competitors who present many 3D Models in their website. Attached is one photo of a 3D Model of one screw.