Brian Gracia wrote:

> I was wondering if any one had built a CNC machine and used Autocad or an
> Autocad generated file to run it.  I know that this is hpgl.  Does anyone
> have any info on such subjects.


a qbasic program reads a hpgl file and sends it to
stepper motors on parallel port
http://home.wxs.nl/~luberth/plotter/plotter.htm