CA, bridge pins

[Isaac OLEG]

Hello,

I used to routinely tap the bridge pins, but one may be aware that if
too much inserted on a brittle bridge they may cause more delaminating
or inside cracks. I am beginning to be more careful with that
actually.

Indeed epoxy as CA works wonder for bridge pins, but definitively
epoxy is not a good tone conductor. CA leaves 'shiny" marks on the top
of the bridge even under graphite, epoxy leave marks too but they can
be on the whole surface and less noticeable

A friend of mine used epoxy glue for a bridge and had a lost in tone,
it is a too much tone absorbent material by his opinion, and mine too.

Best regards.

Isaac OLEG





Isaac OLEG

Entretien et réparation de pianos.

PianoTech
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> -----Message d'origine-----
> De : caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]De la part de
> Lance Lafargue
> Envoyé : samedi 8 février 2003 16:00
> À : caut@ptg.org
> Objet : RE: CA, bridge pins
>
>
> Hey Ed,
>   I use Thin CA in the field and apply it to the base of
> the pin, _away_
> from the string (tiny amount with needle nose applicator)
> with the strings
> on and at pitch. I have also tapped the pins down
> _slightly_ deeper (Roger
> Jolly's suggestion?) and that worked well. I bought a nail
> countersink/punch
> at Ace Hardware that has a concave tip to grab the top of
> the pin w/out
> slipping off.
> I have used the epoxy,too when restringing w/old
> bridges/pins. I would think
> epoxy would be better than CA (less brittle and apt to not
> break free), but
> more work/expense.  Hope you are well.
>  Lance Lafargue, RPT
> Mandeville, LA
> New Orleans Chapter, PTG
> lancelafargue@bellsouth.net
> 985.72P.IANO
>
>
> -----Original Message-----
> From: owner-caut@ptg.org [mailto:owner-caut@ptg.org]On Behalf Of Ed
> Sutton
> Sent: Friday, February 22, 2002 4:30 PM
> To: caut@ptg.org
> Subject: Re: CA, bridge pins
>
>
> Mark-
> Same question here.  Are you doing this with the string in
> place under
> tension, or do you lower tension and move the string out of
> the way, and if
> so, how long do you wait before putting the string back and tuning?
> Thanks.
> Ed Sutton
>
> Mark Cramer wrote:
> >
> > Use a thin viscosity epoxy (West-System), place a drop at
> the base of each
> > bridge-pin, then heat the pin with a soldering iron. The
> heat thins the
> > epoxy and draws it down into the hole.
> >
> > In slow motion; you heat the pin and watch the epoxy bead; it does
> nothing,
> > you wait, then all of a sudden the bead shrinks as it's
> "slurped" down the
> > hole. Remove the heat, you don't want the epoxy to boil.
>
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