Parasolid's formats (for example .x_b) can be processed and converted to Stereolithography CAD format (STL) for the purposes of 3D printing. Such x_b to stl conversion can apparently be done in several 3D conversion utilities as well 3D modeling tools with support of Parasolid.
Open X_B file Open STL fileA Mac version of the popular 3D visualisation software
A set of 3D modeling tools
An online CAD conversion service
A CAD converter with huge format support
A CAD visualizaton, analyzation and translating system
A commercial online CAD converter
A 3D CAD translation software