Homebrew PCBs

My apologies for the first link, I merely glanced at it and did not
notice the dimensions given are for the key slot not the fingers.

I'm was not sure if you looked or not, because it was really easy to
find. Since you don't seem to be picky about any particular socket
(the recommended finger width is not the same even if the pitch is) it
would have been easy to pick just any recommended pattern. It
certainly took a lot longer to ask than to find.

You can probably fake the card edge connector by using traces in any
software. All you need is the option to place soldermask free areas
and you are set. I'd avoid Eagle if you are in a pinch, that software
is missing a few bytes.

ST