Electric Bead Reamers are a LIFE SAVER! When using one, make sure the bead and point of the reamer are wet. This ensures proper drilling and helps reduce the possibility of the stone cracking or breaking. As always with tools, wear a respirator and safety glasses. It only took a few minutes whereas doing it without this tool would have taken much, much longer.
To see a detailed, helpful video about Electric Bead Reamers, watch the video below.