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What size drill bit do I need?

Discussion in 'DIY and Homemade' started by Provolownage, Jun 17, 2012.

  1. I'm looking into making myself a new bong. I already have a vase, but nothing else.
    Correct me if I'm wrong:
    I'll need a drill bit to make a hole for the female downstem to fall through the grommet, and a slider for the bowl.

    What size drill do I need to make a 12mm hole ( I that's how small the female downstems come, right?) and how much should everything including the 9mm slider and grommet cost?
  2. You'll need a drill bit made to drill glass, not just a regular bit. Not sure about your other questions. Convert from standard to metric and you'll be fine.

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