Pinboard repair on Rippen Grand

[Performance Music]

The C/A glue method tends to work pretty good, especially in conjunction 
with driving the pins in further.

In a grand piano, it's a little tricky.  The pinblock must be supported with 
the proper blocks or you'll shatter the pinblock and have to change it out 
and start over.  I would not do this method without the proper tools & 
training.  I find that driving the pins AND C/A glue AND accelerator works 
the best.

Another option would be to remove the lid and fallboard and turn the grand 
piano upside.  This allows the technician easy access to the underside of 
the pinblock, provided that the tuning pin holes went all the way through. 
That being the case, applying C/A glue from the underside would allow more 
glue to get in and around the pin.  Then accelerate it.

The advantage here over applying glue from the top is that the positioning 
allows the glue to seep in further that cannot be accessed from the top or 
in a vertical piano.   Oh, by the way, I never do a loose pin job in the 
clients home.  Personal preference.

One final note.  If you drive the pins in, it will change the tension 
substantially.  That will force you into needing a pitch raise and several 
tunings to bring it back where it should be.  I generally charge about the 
equivalent of 5 tunings for this job.


regards

Ron








----- Original Message ----- 
From: "Don" <pianotuna@accesscomm.ca>
To: "Pianotech" <pianotech@ptg.org>
Sent: Monday, January 17, 2005 3:07 PM
Subject: Re: Pinboard repair on Rippen Grand


> Hi Bill,
>
> I'd go with option one as then 2 and 3 are still paths you can follow.
> Remember to control humidity very carefully after using CA glue, and the
> repair will then last for many years.
>
> At 12:03 PM 17/01/2005 -0800, you wrote:
>>I am not a piano technician, but just a lurker on this PTG list.
>>
>>#1 is to inject very thin CA glue in the pinblock next to each pin.
>>
>>#2 is to remove the existing pins and replace them with pins "the next
>>size larger".
>>
>>#3 is the same as #2, but would replace all of the strings rather than
>>reusing them.
>
>>Bill Morton
>
> Regards,
> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
> Non calor sed umor est qui nobis incommodat
>
> mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/
>
> 3004 Grant Rd. REGINA, SK, S4S 5G7
> 306-352-3620 or 1-888-29t-uner
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