For some applications printing postscript output on a laser printer simply isn't suitably permanant. For these applications the program ps2gcode offers a solution. It takes a postscript file consisting mainly of vector elements (text, drawing etc., but not bitmap images) and converts it into a sequence of GCODE instructions suitable for using to control a CNC milling machine, which can then engrave your masterpiece in steel, stone or some other suitable material.
The program is in an alpha testing state at present and works fine with my own hand generated postscript, but fails with the output of some programs (currently including dvips). These errors will be fixed soon.
Download ps2gc.tar.gz source code, which is distributed freely for non-commercial use on condition that it be correctly attributed and that I be informed of any change.