ebay - cardamatic

[chris]

>Nope. Plastic card (credit card thickness, or less) with
>pencil-sized holes in it. The "reader" is a matrix of electrical
>contacts. You shove the card in it, it insulates the non-punched
>contacts. Simple!
>
>Alas, hard to reproduce the cards automatically. Easy with a hand
>punch though.

What about with a drill press?

You could bundle the card on top of a stack of cardboard cards (or 
plastic, or whatever you are reproducing onto). Clamp them all together, 
and then use a drill press to line up exactly on top of the original card 
hole, and drill down thru the stack of reproduction cards.

Just an idea.

-chris
<http://www.mythtech.net>