Thanks, I'll have him at Euro!
Sebastien,
The buttons were punched out of thin lead foil with the back of a drill bit, just select the size of button you need and find an approproate sized drill bit, use the back side (the side that goes into the drill motor/vice) and put the lead foil inyour palm, and press the drill bit through the leadfoil, sometimes you need to twist the drill bit a little, but you will punch through the lead foil and a little button will end up in our palm. It is a lot harder to describe then it is to do, it is very simple, and very fast to do. Hope this helps a little bit, I'll take some pictures next time to explain it better!