There is also a tool called a nibbler that is very quick and easy to use on
thin steel and aluminum. It makes short work of any rectangular area you
wish to cut. You must start with a clearance hole to make it work. Smaller
versions are available from Radio Shack. The industrial versions that are
used in machine shops are better though. Less hard on your hands.

> > 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