Mechanical question

[aratti]

You can easily obtain a metal template from an old pc. Remove the db9 connector and cut a rectangle
Containing both the db9 template plus the two fixing holes. File the boarder to have it flat.

Place your metal tamplate on your plastic case and drill the two fixing hole on the plastic, hence fix the template to
the case with two screws. Now you have the tamplate in position and strongly fixed
so you can proceed to cut the internal part and finaly file it properly till it is even with the template.

Remove the template and fix your connector.

Cheers

Al.

[dhouston]

You can easily obtain a metal template from an old pc. Remove the db9 connector and cut a rectangle
Containing both the db9 template plus the two fixing holes.

With most PCB Mount DB-9 connectors, you need a rectangular opening that encompasses the extended nuts for affixing the cable. IOW, the fixing holes are within the needed cut-out so you cannot affix the template this way.