I made a surface in the program Mathematica, but unfortunately because it's a surface it has no thickness to it. Is their any way I can have mathematica add thickness to it? Like connect the graph to a scaled down version of itself or have it graph all points that are like 1 unit away from the graph?
I don't know if Mathematica will do it . If you export your file as either an 'ply', 'obj 'or 'stl file then open it in http://www.blender.org/ you should be able to solidify the shape to give it thickness. you will then have to make sure all the 'normals' are facing out ward. Export again as 'stl' and open it in http://meshlab.sourceforge.net/ or http://www.netfabb.com/basic.php where you can edit, repair and scale your model.