The *.drd file is the excellon file required for drills coordinates.
The *.drl is the file containing a simple list of the tools used for
drilling, like this:

T01  0.20mm
T02  0.25mm
T03  0.60mm
T04  0.70mm
T05  1.00mm
T06  1.30mm
T07  3.50mm

The PCB manufacturer could ask you one more file showing the drill
locations on PCB (is good only for controlling the project and has no
manufacturable function)

So the *.dri could be the last file I'm talking about (which is a
standard gerber file in which you'll select only drills and CAD should
generate also a table with drill numbers/ categories and a shape used
to mark every drill)

Vasile


On 1/30/07, Andy Tuthill <azandy63@hotmail.com> wrote:
> I'm trying to get used to the cam processor to make the files needed for my
> pcb's.  Can anyone tell me what to do to make the .dri (drill information)
> file?  I made the .drd and .drl files ok but I'm not sure how to make this
> one or what is included.  The rest of the files needed appear to be ok.
>
> The help file doesn't mention this but the board maker needs it done
> correctly so I'd really appreciate some suggestions.
>
> Regards,
> Andy
>
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