It is likely that 3DXML CAD files can be converted to STL format used in 3D printers. Can probably be done in software produced by Dassault Systemes like CATIA or perhaps any 3rd party program that supports the 3DXML format.
Convert Dassault Systems Universal 3D XML document to Stereolithography CAD file.
We have found 3 software records in our database eligible for .3dxml to .stl file format conversion.
Microsoft Windows software - convert 3dxml to stl on Windows
A CAD converter with huge format support
Convert from 3dxml file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned 3dxml to stl. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A PLM/CAD/CAM/CAE software suite
A CAD visualizaton, analyzation and translating system