Thanks very much for your reply. The majority of the drilling will only be on one side, but If I should need to drill both sides I came up with a little trick to help with accuracy. After one side is drilled and the pearl turned I place a long piece of pencil lead (Anything long and straight will work) into the side that I have already drilled and then level it. It's a some what primative technique, but it works extemely well for me. Can you tell me how long I can expect a single drill bit to last? Maybe recommend a longer lasting bit? Thanks again!
