Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

At 09:16 PM 11/17/2004, crankorgan wrote:

> I mill my circuit boards. After making my outline artwork I go back
>and put a dot in the center of each pad. During milling the dot
>becomes a starter hole.

What size hole do you use for this?

I had some prototyping boards once, that did this. 100 mil grid of pads,
each pad had a tiny hole in the center for drilling, IF you wanted to. The
source is long gone, and I'd like to make some new ones.