I want to cut out windows on a factory model for my layout, but it will require 48 separate holes in the card. I know there are people who cheerfully apply millions of bricks by hand, but I also have a life, so I am wondering if anyone has any tips for speeding up the process of window cutting? I have been thinking along the lines of mounting some Stanley blades in a hardwood block to make a die, and then using my drill press to stamp out the holes. Any ideas gladly considered.
Your idea of making a die is a good one: I did something similar by carefully cutting the outline of the window into a block of wood. In my case, I wanted an arched top so I used a tank cutter blade first and cut in the straight lines afterwards. Stanley knife blades are too brittle to work with, so I used some of the metal banding you sometimes get wrapped around heavy crates and Araldited it into the grooves I had cut into the wood. (An old clock spring might do equally well) The resulting die almost cut through the card I was using but the resulting impression was easy enough to finish off with a scalpel and resulted in a row of windows the same size. It's worth while experimenting with your original idea.
An option to consider is looking for a Mount Cutter in an art shop, basically a sharp knife on a runner to give a straight bevelled edge in mounting card. This might speed things up a bit and guarantees a straight cut.
What about making a square of wood the same size as the wanted window but with a given thickness. You then get a wooden block and attach your square to it. Then cut some narrow channels on all four sides of the square. Then attach the square type razorblades using epoxy in these grooves (snap in half and cut to length).