When removing pinstripes from cars, you use an "eraser wheel" that really is what is says...a giant pencil eraser that you put on a drill. You'd think it would DESTROY paint but it amazingly hardly marks it at all. I restored a Caravan once that had pinstripes all over it that I had to remove. I removed the ones around the windows 1/128" at a time with my fingernails over countless hours over several days when I found out about the eraser wheel...so I ordered one.
I was skeptical...but it removed an entire 1/2" wide 15 foot long pinstripe from the entire side of the van in about 5 minutes, old glue and everything. And the factory paint was not harmed. I felt like an idiot for all those hours I wasted scraping off flea-sized bits of pinstripe with my poor fingernails. But anyhoo...I DO think that the eraser wheels eat off lacquer however. But on the Caravan, it didn't even mar or scuff the paint. Once removed, however, is when I saw all the ghost marks and shadows from the previous stripes. So, I re-did the stripes in better colors and styles. But as far as the eraser wheel...amazing product.
I know they work, and don't harm paint...but I would NEVER use one on an Airstream's clearcoat or aluminum corners. Who knows what it would do to them, and I'd never want to test it to find out.
Here is a link: Amazon.com: AES Industries 4" Smart Eraser Pad for Pinstripe, Decal & Adhesive Removal [Made In USA]: Automotive