> I'm getting tired of filing. Any other creative
> suggestions for cutting DB type holes are welcome.

Why do you need the hole to be D-shaped?  Rectangular holes
usually work fine unless there is some odd hardware involved, or
unless the exposed bit of visible connector shell is an aesthetic
problem.  Any rectangular holes are usually easier to fabricate.

Look for standard enclosures with the right holes already, too.  I sell
a product in a PacTec box that is molded to take the DA shell (9pin
standard pitch), and they make similar cases for DB shells.

Barry.
------------
Barry King, KA1NLH
Engineering Manager
NRG Systems "Measuring the Wind's Energy"
Hinesburg, Vermont, USA
www.nrgsystems.com