Shapeways Strong & Flexible Plastic 3D Printing Material Information - Shapeways will print in almost any material you want, including metals if necessary. For those cups, nylon would work well. It is pretty strong. I don't know what type of surface finish you require, but they will be a little rough. "Steps" in that material are about .005". Nothing some fine sanding probably won't fix. Or they can tumble polish the part for you. Now all you need is to find someone with a scanner and someone to transfer those scans into a CAD program so that the models can be printed. Good luck (especially finding a 3D scanner).