Home › Forums › CNC Technology › How to determine the drill bit size? This topic has 1 reply, 2 voices, and was last updated 3 years, 5 months ago by max green. Viewing 1 post (of 1 total) Author Posts November 25, 2021 at 6:46 am #938 max greenModerator You can find the drill bit size chart on lots of sites such as IPQC’s WIKI, standard size drill bits available in several measurement systems. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In