Check out "http://www.apcircuits.com". They have a _very_ short list of
"standard" sizes that they will drill at no extra charge. I have used these
drills and they seem to cover all the components that I use. Of course,
these are drills sizes and normally you spec. finished hole size in a PCB,
so remember to make the translation when you make up your drill hole chart.

By the way, I find these guys amazing. I am in California. I email my
design to them before 6:00AM on Monday and I have finished boards in my
hand by noon on Wednesday.

Regards, Jim Ham

At 04:05 PM 10/25/97 +0800, you wrote:
>Can any of you let me know the 'typical' drill sizes you are using for
your PCB designs.
>
>The last time I drilled any boards was about 10 years ago, and I haven't
the faintest idea what size the bits were after all these years...
>
>The holes that I'm most interested in are -
>
>        'Standard' DIL IC pins (no socket)
>        Axial components e.g. 1/8 watt resistors
>        0.1" male IDC (Berg) headers
>
>The application will eventually be on double-sided plated-through fibreglass.
>
>I would also be interested to know the pad sizes you are 'normally' using
with these drill sizes for 'easy' hand assembly and soldering...
>
>Many thanks
>MC
>
>
Jim Ham, Porcine Associates
(415)326-2669 fax(415)326-1071
"http://www.porcine.com"