[pianotech] Pinblock cracks; CA or Epoxy

[Dean May]

I think along the same lines as Doug here. Pin blocks are cross laminated,
so you are seeing a separation of a butt joint of the top layer, which is
essentially what that birds eye is, the top layer of the pin block. I
wouldn't worry about it unless you are experiencing loose pins in the
affected areas. 

Unlike Joe, I would use thin CA first. No way will epoxy penetrate to the
places where the thin CA can get. Then if there are any appreciable gaps
(hard to tell from the picture) fill them up with epoxy. 

Dean
Dean W May                (812) 235-5272 voice and text 
PianoRebuilders.com    (888) DEAN-MAY        
Terre Haute IN 47802

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Douglas Gregg
Sent: Sunday, November 04, 2012 4:30 PM
To: pianotech at ptg.org
Subject: [pianotech] Pinblock cracks; CA or Epoxy

Message: 3
Date: Sun, 04 Nov 2012 20:57:20 +0000
From: David Boyce <David at piano.plus.com>
To: pianotech at ptg.org
David,
the vertical cracks look to me to just be in the birdseye veneer and
of no consequence. I would leave them alone. If the owner is still
concerned, I would do a cosmetic fill with Konig hardwax if you have
that. It is similar to shellac sticks but easier to use. at any rate
it is not involving the pins and should not affect anything.

Doug Gregg
Classic Piano Doc

Subject: [pianotech] Pinblock cracks; CA or Epoxy
Message-ID: <5096D6B0.1090909 at piano.plus.com>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"

A client's old birdcage piano has some splits in the pinblock.  He is
strongly committed to keeping it as it's in a house which belonged to
his grandparents and which he has restored, and the piano may have been
in the house since the house was built.

Would it be a good idea to put epoxy, or CA glue into the splits, of
which there are severat, about two to three inches long and varying in
depth from 14 inch to 3/8 inch.  Which would be better? CA or epoxy?

Best regards,

David.


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