For adhesion? Not good. Glass beads are rounded while alum oxide granules are sharper and leave small microscopic tooth like jagged edges, thats why its used for sandpaper and other roles where adhesion is needed.
I'm always amazed the amount of alum oxide that washes off with acetone from freshly blasted gun metal (thats been followed up with compressed air). This tells me the stuff does some serious etching.
Did you build any jigs to hold your small parts yet? (for applying the coating)
MtnHtr
