How 3D printers Work
3D printers utilize what’s known as additive manufacturing, which means that they create objects by starting with nothing and then add material.
The printer takes a strand of plastic (filament), melts it, and then lays it down on the print bed in a series of layers (slices) that stick together and form the object.
3d printingThe extruder needs to be able to move in 3 dimensions relative to the bed, in order to print the cross section of each layer (X and Y axes) and to move up to the next layer (Z axis).
Video of 3D Printing at work click here to see it on YouTube’s web site, or click the Play button below to view it right here.