A couple of years ago I bought a Silhouette Cameo cutter. I’ve used it to create paint masks for personal work, and it was also meant to be used for "day job" stuff. By scanning a part from one of the coach kits I was able to trace the shape on the Mac and get it into the cutter software.
Stepping and repeating the shape - I needed over 100 pieces - I did my first cut to see if it worked. I wanted a score, rather than full depth cut.
Scoring meant the sheet of parts would stay together, and I could "snap" parts out of it as required.
After a bit of trial and error, I found the setting I needed. While I was cutting, I also created a shape to add strength to the coach kit roofs.
I need to use the kit more often. It takes me a while to reacquaint myself with the software and what capabilities the hardware has. Still, happy with the end results, and a fair bit of hard repetitive work avoided.