pin comparisons

[Erwinspiano@AOL.COM]

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In a message dated 1/26/2002 2:06:10 PM Pacific Standard Time, A440A@AOL.COM 
writes:


> Subj:Re: pin comparisons 
> Date:1/26/2002 2:06:10 PM Pacific Standard Time
> From:<A HREF="mailto:A440A@AOL.COM">A440A@AOL.COM</A>
> Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> Sent from the Internet 
> 
>     Ed

   Now I'm curious. If I used any thing smaller  than .250 to drill no. one 
pins in the buldoc blocks I'd be hatin life. Are you perhaps running the 
drill speed slower or are you just stronger than Me.?Slower speed usually 
nets a looser fit. I've been currently running drilll speeds of 1200 to 1400 
rpm.
     I guess we should also factor in the climate variables from Calif. to 
Nashville. We don't get the super low humidity for prolonged periods how bout 
you. Or Humid for that matter.
     I 've been paying closer attention to the emc the block is drilled at . 
I don't want to drill it on either end of the emc spectrum but in the 40 to 
50% range unless it's going to the desert.
     >>>>>>>Dale Erwin

> 
> I wrote:
> <<   I used 1/0 pins from Pianotek in a Steinway plank.  I 
> > drilled 
> > it with a new "C" bit in the bass and middle section, switching over to 
> the 
> > 
> > "D" bit for the last two octaves. 
> 
> Dale asks: 
> >>>What is the decimal equivelents for these bits?
>     The C is .242", the D is .246" and the E is .250".   I have used an E 
> at 
> the top, thought it left too little margin for long term safety.  
> 
> Regards, 
> Ed  


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