Double drilling - was Tuning pin choice

[Roger Jolly]

Hi Terry,
                Torque tends to be very even at about 110inch/lbs, as far 
as you can tell with the primitive torque wrenches.  I have always gone 
with 2/0 blued pins.  I may have done one in nickle but am not sure.  Just 
finished an open face block and it is nice.
Time elapse varies from 3 or 4 days, to 3 weeks. depending weather the case 
is being refinished.
Have not noticed a big difference in torque.
I'm happy with the results using 2/0 pins. so I doubt that I will change.
The times I have measured torque, has been after I have chipped and tuned 
several times.

Regards roger



At 09:52 PM 2/26/2003 -0500, you wrote:
>Hello Roger! What kind of torque to you get with your methodology? Do you 
>ever use 1/0 pins on the bolduc blocks on pianos with a full plate web and 
>no tuning pin bushings - as with Steinway and Baldwin? How much time 
>passes between drilling and installing pins? Have you noticed any 
>significant fit/torque difference when time between drilling and pin 
>installation is increased or decreased? Thanks.
>
>Terry Farrell
>
>----- Original Message -----
>From: "Roger Jolly" <roger.j@sasktel.net>
>To: "Mike and Jane Spalding" <mjbkspal@execpc.com>; "Pianotech" 
><pianotech@ptg.org>
>Sent: Wednesday, February 26, 2003 8:59 PM
>Subject: Re: Double drilling - was Tuning pin choice
>
>
> > Hi Mike,
> >               First pass, I'm .020" under size, then just use the regular
> > drill bit that is .020" under sized to the pin. I use Bolduc blocks.   I
> > drill my blocks out of the piano.
> > Regards Roger
> >
> >
> > At 10:49 AM 2/26/2003 -0600, you wrote:
> > >Ron, or maybe Roger??
> > >
> > >One of you posted a year or more ago about how you take the edge off of
> > >the second "reaming" bit to make it follow the first hole.  I was unable
> > >to follow your description of which edge you touch up.  Would you mind
> > >repeating and clarifying, for those of us who didn't get it the first
> > >time?  Also, is the second drilling done in the same drill press setup as
> > >the first?
> > >
> > >thanks much
> > >
> > >Mike Spalding RPT
> >
> >
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