[pianotech] Size of Pinblock Drill bit?

[Greg Newell]

Test, test, test!

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Noah Frere
Sent: Wednesday, March 06, 2013 2:57 PM
To: pianotech at ptg.org
Subject: [pianotech] Size of Pinblock Drill bit?

 

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?

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