I've been using a sharp Xacto and Tamiya masking tape to make my window stencils on those bodies that don't come with masks. They are few and far between, but they do exist. Particularly in those eBay odd lots that come up no and again. I'm also getting braver as my airbrush skills improve with making other types of masking shapes for various places on the body.
I'm also a bit of a computer nerd, so when I bought my wife a Cricut vinyl cutter for Christmas, I naturally started to play. It's amazingly accurate and I've scanned many my homemade body masks into the software and have been amazed at the the output. The 'canvas' is a simplified CAD program. It has limits, but works very well for this purpose.
The issue I am having is finding a vinyl or sticker paper which will release easier than the stock I've experimented with thus far. Has anyone been using a vinyl cutter and found a decent masking product that doesn't require scraping and nearly pulling out the window when taking off the vinyl?
Thanks,
ScottH