Tunings stability problem

[baoli liu]

If the pinblock already cracked, shimming or larger
pins will make the crack worse.

if the pinblock didn't crack,replacing with one or two
size larger pins or dropping some thin CA glue works
fine.I personally don't like shimming.

> Is this why glue may be better?
> 

To treat the loosed pins with CA glue takes less
time,but the pin will be a little jumpy;to replace
with larger pins takes longer time. Reaming the pin
holes before insert the larger pin could result a
smooth pin torch .

> Is glue only useful for a cracked plank? Or also for
> enlarged holes?

Both.

Baoli



--- Scott & Jason Jackson <jurjens@tpg.com.au> wrote:
> Won't shimming or larger pins make a crack spread
> wider, making the problem
> worse?
> 
> Is this why glue may be better?
> 
> Is glue only useful for a cracked plank? Or also for
> enlarged holes?
> 
> Scott
> 
> 
> ----- Original Message -----
> From: "baoli liu" <baoli_liu@yahoo.com>
> To: <pianotech@ptg.org>
> Sent: Friday, 24 May 2002 6:09
> Subject: Re: Tunings stability problem
> 
> 
> > Hi Ron,
> >
> > If you continue to find loosed tuning pins,you'd
> > better check if pin block is cracking.
> >
> > Shimming with sandpaper is one way to kill loosed
> > pins. replacing  the original  tuning pins with
> larger
> > ones or using CA glue also works well.
> >
> > Of course,pin block must be supported from
> underneath
> > while you replace pins or doing the shimming work
> to
> > prevent pinblock cracking.
> >
> > Baoli
> 
> 


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