[pianotech] Pinblock Cracks; CA or Epoxy?

[David Boyce]

Joe and everyone else, thanks again for all these helpful observations!

Joe, I've expressed some thoughts about the rationale for tuning low, in 
my reply to Terry.  It's quite newly in its now warm and dry environment 
and I'd like to see how it behaves. But I'd certainly like to do a pitch 
raise.  Having got the action working, and having established that the 
piano is tunable, I would have time to do it on another visit.

Best regards,

David.
On 05/11/2012 19:00, pianotech-request at ptg.org wrote:
> David,
> I think you are being Ultra conservative with your approach. What you need
> to know is: 1. those pianos have a Low Tension Scale to begin with, (by
> design) 2. The piano string/pinblock system functions at it's best, AT it's
> designed tension. i.e. there will be better stability and tunability at the
> designed tension. Leaving or puting the piano 300 cents low is a mistake,
> imo.
> If it were me, I would have raised the pitch to 100 cents flat in the
> initial session, to see how the structure took it all. Then, have at it
> again, within 3 months. At that point I would attempt to tune it at it's
> Designed Pitch, A=435cps. I doubt that anything bad would occur using this
> process. IF there were problems, then I would attempt to fix them. (i.e. If
> it ain't busted, don't try to fix it!<G>)
>   Since I've had extensive experience with these pianos, I feel confident
> that this is the best approach. Also, it is my opinion, you have not done
> any harm by lowering the bass and raising the treble. At this juncture, you
> have merely broken the crusty corrosion that I've found on most, at the
> string termini.<G>
> BTW, Epoxy, not only has greater "strength" than CA, it will, somewhat,
> bond with the glue existing in the joints of the "Pinblock", better than CA
> would. At least this is what I have experienced with usage of both. Neither
> is the be all for every application, as some would like us to believe.<G>
> Best Regards,
> Joe
>
> Joe Garrett, R.P.T.

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