Question About Sanding

Thanks all. We have one of those small blasters with the hopper on top. We also have two air compressors but they aren't that big. They might do for blasting though. And we have the blasting gun for the compressors. I wouldn't use them for painting because of the drying time. I'd be afraid that I would have to keep stopping to let the compressor catch up. Guess that isn't a huge worry with blasting. Now inside the two pieces of metal is a lot of rust. None on the outside but the holes appreared from the inside out. How do I get to this? I can't see all the way in to know if I blasted it all and I can't reach in to coat it with a converter.

It's 7:30 am and I am anxious to get out to the garage.

Joanne