Drill a pilot hole first that comes through both skins. Then drill through one side half way and then drill from the other side to finish the job. That way you will get less breakout and have a tidier job.
I would recommend a starret or Bosch cutter, not one of the silly multi size cheap things.
Andy.
I would recommend a starret or Bosch cutter, not one of the silly multi size cheap things.
Andy.