Question About Sanding

If you don't want the helmet thing, you can find those small blasters like in the picture for 10 to 15 bucks at places where they sell chinese tools.
A few years ago I had a VW that I think had been towed behind a motorhome or something. The hood had pitted rusty spots all over it. I put something like Duro Extend on it. A few months later I used some stripper on the hood. It took off all of the Extend stuff & all of the rust underneath was gone. Just pitted metal. I used a bit of filler on it & smoothed it all out. Then the car got totaled.