Best I can recall, years ago saw a fender that was destroyed by sandblasting.
I know it can be done for sure.
What I was wondering was although I'm blasting very carefully is if I'm doing damage that you can't see with eye or minor enough to block out with primer.
Not that it really matters if it works out but I would assume any blasting would change the metal somehow or somewhat, just a matter of how much.
Shine thanks for the tip, going to try and locate some.