How does bead blasting (not sand/grit blasting) compare to a
vibrational tumbler in finishing?
I have heard that a bead should not have sharp edges and thus
burnishes the metal much like a rumbler. Is this correct?
Bead blasting is quite different to vibration finishing. The tiny
glass beads are fired at the metal surface by compressed air. It is
slightly abrasive and produces a mat finish.