Epoxy

[David Love]

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Isaac:

My use is similar to yours.  I have used epoxy for securing cracked =
bridge caps when recapping was not an option.  In this case I have =
several hairline cracks that I would like to seep some epoxy into and =
need a thin solution.  I would prefer not to have to mess with heating =
up the bridge cap to thin out a higher viscosity product.  I agree with =
a previous post that CA glues are not the right stuff in spite of the =
marketing claims.  They break down over time with exposure to alkaline =
environments and are really designed to hold non porous surfaces =
together with a very very thin application.  Or at least so I am told by =
my museum conservator glue authority friend.

David Love


  ----- Original Message -----=20
  From: Isaac OLEG SIMANOT=20
  To: pianotech@ptg.org=20
  Sent: January 01, 2002 11:15 PM
  Subject: RE: Epoxy


  Hello, David.
  The name can be "stratification epoxy system" . I bought European =
epoxy you surely will not find

  The consistence is in Brookfield , mine was 600 +-100, with a 50 min =
pot life , takes 5 days to be hard.
  Different hardeners can be used on mine, giving different viscosity.

  I used it to reinforce an old cap on a little grand, was 3 years ago, =
worked fine.

  it really dripped in the wood. This epoxy is used for marine works =
(surf, boats) and planes. Ask for the specification regarding the shore =
and the elasticity modulus of the product.
  I may admit I am totally unsure of how it will hold in time. My cap =
was not broken, just the little habitual cracks.

  I washed the excess with acetone and inserted new bridge pins. Did not =
like the mess of washing the cap , but it was not so hard.
  May be some graphite can be added in the top coating, but I doubt it =
will allow for a really good string rendering .

  I wondered that if string rendering is poor, if that does not conduct =
to bridge roll condition sooner or later ?

  What do you think ?

  Regards.

  Isaac OLEG
    -----Message d'origine-----
    De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la =
part de David Love
    Envoy=E9 : mercredi 2 janvier 2002 06:51
    =C0 : Pianotech
    Objet : Epoxy


    I keep hearing mention of an epoxy that is the consistency of water. =
 Who makes this product and where can I get it. =20


    David Love

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