This is what I was doing wrong. I was tying to print to file in QCAD and the
only option is PS.

Doing the Export in QCAD, Open and Save as PDF using OO writer worked.

I still have a problem. The mechanical type drawing is suppose to be to
scale. I even tried to draw a square and it is not square. So I still have
some bugs to work out. I did tell Adobe Reader to print it to scale in two
different places to no avail.

If you have any suggestions or ideas they would be appreciated.