I assume you mean brad-point for the initial, rough-in drilling. I'd think you'd want split point for the chase bit. Paul Bruesch Stillwater, MN On Wed, Mar 6, 2013 at 1:57 PM, Noah Frere <noahfrere at gmail.com> wrote: > I searched my not inconsiderable archives for an answer, but have come up > empty-handed. I am using 1/0 Denro blued tuning pins in a new multi-lam > Maple pinblock, and need to order the drill bit. I'd like to double-drill - > makes sense. The Pianotek catalog recommends, in effect, a drill bit .016" > to .021" under the diameter of a 2/0 pin in a multi-lam pinblock. Following > that logic, I could use the .250" on the first pass, and the .261" (.015" > under) or .257" (.019" under) drill bit on the second pass. Also, I like > the idea of the brad-points, but also like the idea of the other ones, > which are "slow spiral." Any recommendations? > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20130306/4c6c50c1/attachment.htm>
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