You could make a pattern from either wood or metal with the proper
sized holes needed to use your plunge cut router with a bushing. An
1/8" (or 1/4") solid carbide up spiral and you cut cut each disk in
seconds. You could take any board of the correct thickness, put the
pattern on it, plunge cut out the disks to your heart's content. Put
the pattern on the top of the finish material and suspend it (like
between two sawhorses) so that when the piece is cut free it will
simply fall out and not get beaten around inside the hole.
You could use a hole saw for the correct size of hole for the pattern
and literally put fifty holes on a piece of pattern material if you
wanted. Clamp it to the board are going to perforate and get after it.
Carbide cut edges all the way around with the orientation you want,
and those bits are cheap enough for a production job. At about 15
seconds to cut a hole, it seems like it might be easier than the time
it would take for a more sophisticated (time consuming) setup.
Especially if you had to setup your prodcutino arrangement each time.
15 seconds X 50 = 12.5 minutes of time for one pass. Thinking that the
pattern would take literally seconds to move and clamp, you could do
almost 600 or so an hour! Probably closer to 500, but hey.. if you
were closer to the 1/2 (thinner) size on your target material it
be closer to to 600. You would have to be pleased with that.
Also, little or no sanding would mean you have a near finished product
bouncing out of the hole. Put a blanket under your work as a catcher
and you are "in".
The pattern would sure be easy enough to make.