The colours were split into 3 layers for each box - red, white and blue. I worked with layers instead of separate documents, to ensure everything was overlaid in the right place:
I then went down to the digital dungeon, and got each sheet printed exactly to scale:
I wanted to see if the laser cut boxes were at the same exact scale, so I placed a box over one of the printed pages. As you can see below, the sizing seems to be perfect, success!
