Hey guys as you know I am working on a shirasaya for the tango I forged. I was wondering how the location of the mekugi ana is determined. I understand that it should be located on the 2nd diamond but I am first making a shirasaya and then full mounts. It will be a while before I gather enough cash to purchase the required materials so I don't understand how to determine the location of the hole. Can I use a regular drill bit or is a tapered one preferred? If so what size and where can I buy it? Thanks.
-Jeff