[pianotech] Size of Pinblock Drill bit?

[Noah Frere]

Good point both of you on the brad point. Why 1/0?  From what i understand,
it has a nicer feel because of the decreased surface area contact with the
wood. Plus it leaves more room for coils and string clearance. Plus they're
less expensive i think (though that is an after-thought). Plus i like fine
things. Thinner is finer :)  Any reason why not?


On Wed, Mar 6, 2013 at 3:56 PM, Ron Nossaman <rnossaman at cox.net> wrote:

> On 3/6/2013 1:57 PM, Noah Frere 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?
>>
>
> You can't use brad points on the second pass anyway, so decide if they
> will get you anything desirable on the first and buy accordingly. Slow
> spiral, definitely, particularly on the second pass. The 0.250" should be
> fine for the first pass. As to final size, as Greg said, test - etc.
>
> Why 1/0?
>
> Ron N
>
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