Different elements in the structure are distinct and easy to differentiate due to the color retention. The VRML format works well for viewing 3D print files, since it retains the color data. Thankfully a high quality free program for conversion into both VRML and STL files has already been created by Professor Werner Kaminsky (University of Washington). The CIF structure files provided by the databases on this site will need to be converted into alternate file formats for 3D printing. The PSU 3D Converter is here: PSU 3D Converter Cif2VRML The 3D model may then be edited and, when ready for printing, one may simply click a button to have the model exported to STL, X3D, or VRML. One can search the Crystallographic Open Database (COD), download CIF data files, and then open them in the same tool for 3D visualization. A dedicated web-based tool has been created that allows users to find atmoic structures, create 3D models, and export the model to 3D print files.
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