Re: Widening an existing hole with a drill bit: how to guarantee concentricity?

Steve Johnson · 2023-04-19T18:04:47-07:00

If you have a drill press, I would put the 12mm bit in the chuck, with power off lower the chuck/bit into the piece, then clamp the piece to the drill press table. Raise the chuck, replace with 13mm

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Re: Widening an existing hole with a drill bit: how to guarantee concentricity?

Steve Johnson All Messages By This Member #59915 If you have a drill press, I would put the 12mm bit in the chuck, with power off lower the chuck/bit into the piece, then clamp the piece to the drill press table. Raise the chuck, replace with 13mm and drill

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Re: Widening an existing hole with a drill bit: how to guarantee concentricity?