Glen
Last week I tried to bead blast an old blade ate up by scale rot. I used what would be the equivellent to 60 grit glass beads to do the blasting at 60 psi. Mixed results, the blade, a full hollow ground, was very badly rusted aprox. a 5/8. It is now a very uneven 3 to 4/8. the rest of what is left has a nice satin finish. I did not try to sand of buff it. I have some 120 grit beads on the way and I am going to try them at a lower air pressure. I use the blast cabinet to clean car and motorcycle parts so I thought I'd give it a try. Food for thought.
Tim