Epoxy Man Strikes Again

[Isaac OLEG]

Hello

And what makes the Titebond crystallizing so much, for a PVA based
emulsion glue ?

Do you know is there some Phenol in the mix, it does not smell as the
usual acetic odor of the white glues we have in Europe ?

Isaac OLEG

Entretien et reparation de pianos.

PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77

> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de Ron Overs
> Envoye : samedi 8 mars 2003 09:16
> A : Pianotech
> Objet : RE: Epoxy Man Strikes Again
>
>
> At 4:36 PM -0800 7/3/03, gordon stelter wrote:
>
> >A drum made of fiberglass and Titebond(TM) would be
> >even duller, becuause Titebond(TM) is PVA based
> >(Polyvinylacetate ) and never dries truly hard. Modern
> >chewing gum is also PVA. Epoxy dries harder, is a
> >better sound conductor and more moisture resistant.
> >     Also, Titebond, especially Titebond II, stains
> >yellow pretty badly, especially on spruce.
> >      Thump
>
> While standard PVA adhesives do not 'dry hard' as you mention, and
> they are also subject to creep, Titebond does not have this
> problem.
> When Titebond is properly dried it will shatter when
> surplus glue is
> remove with a chisel or scraper. With a tensile strength of
> over 3000
> psi, you will have no problem gluing a bridge with Titebond Extend.
> The longer working time of Extend can be handy when laminating. We
> use it for making the laminated sound board cut off.
>
> Regarding the positioning of the sound board buttons, I
> would concur
> with Ron N. and Del. It is much better to position sound board
> buttons between ribs and not to screw or dowel into the rib. I have
> wondered whether it would be better to replace the button
> screws with
> maple dowels after the bridge/panel joint has cured. It
> might help to
> prevent the tendency of the bridge to pull over. I noticed that
> Fazioli was doweling the bridges through into the ribs in 1994,
> however I don't know if it remains their practice today.
>
> Ron O.
> --
> _______________________
>
> OVERS PIANOS - SYDNEY
> Grand Piano Manufacturers
>
> Web: http://overspianos.com.au
> mailto:info@overspianos.com.au
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