Carl,
Another easy and cheap solution is to mount a laser pointer showing where the bit will hit the PCB.
--- In Homebrew_PCBs@yahoogroups.com, "H. Carl Ott" <hcarlott@...> wrote:
>
> I was starting to have some problems getting good alignment when
> drilling the smaller holes/pads on some of my home brew pcbs. (larger
> pads (>40mils) etched as an annulus are not really an issue)
> Figured better illumination might help.
>
> This was such a cheap & simple mod, and since it worked out so
> well... I thought I'd share a couple of pics.
>
> http://picasaweb.google.com/hcarlott/DrillPressLEDHaloMod
>
> Cheap led ring from DX and some double stick tape.
> http://www.dealextreme.com/details.dx/sku.25513 (they have different
> sizes ranging from 60 to 90mm).
>
>
> --
> carl
> --------------------------------------------------------
> Henry Carl Ott N2RVQ hcarlott@...
>