Bridge Pin/Epoxy Question

[Tony Court]

----- Original Message -----
From: <ETomlinCF3@AOL.COM>
To: <pianotech@ptg.org>
Sent: Sunday, June 11, 2000 9:48 PM
Subject: Re: Bridge Pin/Epoxy Question


> I understand your experiment and can believe your result.  However, did
you
> drill your trial through pinblock material?  I used thin visc. CA glue on
> some of the loosest, driest, cracked and worst pianos I have ever
encountered
> in the desert region of Africa last year.  When I returned to check these
> pianos I found them holding well after the applications of CA were
applied.
> One piano had no torque on most pins and after two applications of CA glue
it
> was holding at 50"lbs to 70" lbs.  Even after a year it was holding at
> similar readings.  I have written about how and what was done on the list
> before.  I still believe thin visc. My field studies have me convinced.
CA
> has a definite place in assisting torque on old beater upright pinblocks
and
> will use it again.
>
> Ed Tomlinson
>
> <<  I did do some experiments of my own though, and glued two pieces of
>  maple together......... on application of tensile force, the glue joint
did
>  not break, but the wood separated leaving timber on both sides of the
glue.
>  I also drilled a piece of maple to be a couple of "thou" loose on a
tuning
>  pin, filled with CA and left it over night,(this is the time it takes to
>  achieve full strength).The following morning, the pin was at first stiff,
>  but with a little more "shear" force, the CA broke down. This convinced
me
>  that it was not the stuff for loose tuning pins! >>
>
>
> Ed Tomlinson
> Cascade Piano
> Piano Sales/Piano Technician

> Dear Ed,
I did use maple, which is my understanding of pinblock material, and I
thought I used the thin visc stuff, but I clearly need to try it again
sometime!
Cheers
Tony.
>