Although paper printing has historically been located in the realm of 2D printing, it is possible to 3D print objects out of paper. This process is called Selective Deposition Lamination (SDL). In order to print, a normal 2D printer is required; each layer of the object is printed in an inkjet printer first, then fed into the 3D printer, which stacks it, cuts the model and outlines accordingly, then adheres the layer onto the build platform. Special printer paper is not required, although specific inks are used to allow full color printing on each side of each layer. Like powder based forms of printing, the support material is made out of the print material itself, which in this case is just unglued paper.