David,
When you dropped in for coffee yesterday, I meant to show you something that I had just bought from Super Cheap, but our conversation was widespread and it went out of my head.
It was a hand held sandblaster that has an integral 600 ml hopper and is mobile (not a cabinet device) and could be extremely useful for dealing with anything that is deeply rust pitted. At $35, it was worth getting one to try.
See:
I am posting this to the group as others might find it useful.
Les