I have a Cricut machine. It cuts vinyl fine, still working out setting thickness for cutting styrene. It works okay, but my CAD needs to be a bit better- better accuracy for corners. I originally got it to make paint masks, but when I found it would also cut thicker materials like sheet vinyl and sheet wood I started planning to make actual model parts.
Problem now is that the version of the CAD I was using won't work on my Windows 10 machine and they raised the price so high I can't afford the latest version. All the cheaper CADs I find are hard to use and I have to learn a new one.
There are several cutters similar to Cricut, some used by people on this forum. Google "vinyl cutters."