Apart at the Seams (Epoxy??)

[John Ross]

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I find that the carriage bolts I use on separated pinblocks, would hold =
even without the epoxy.=20
Or am I missing something?
I was using 1/2" ones, but the List tells me that 3/8" is fine.

John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca
  ----- Original Message -----=20
  From: Richard Snelson=20
  To: Pianotech=20
  Sent: Thursday, June 03, 2004 10:33 AM
  Subject: Re: Apart at the Seams (Epoxy??)


  Having taken two of these piano backs apart, I don't see how epoxy =
poured in the joint is going to hold diddly. The back is failing because =
of the poor glue in the joint. Both sides of the failed joint failure is =
covered with glue power or residue. I tried to bond a couple of these =
pieces with epoxy without cleaning the old glue off. Result! Won't hold. =
The 6" maching screw through to the posts are really what's holding if =
you don't take the top apart and rebuild it. It a great shop job to =
rebuild the failure.=20
  Rich
  Richard Snelson
  rsnelson0984@mchsi.com
    ----- Original Message -----=20
    From: Dean May=20
    To: Pianotech=20
    Sent: Thursday, June 03, 2004 4:39 AM
    Subject: RE: Apart at the Seams


    >>Poured a bunch of West System epoxy into the voids. ! I usually =
drill downward into the cracks with a 1/8" drill every inch or two to =
make a channel for the epoxy to get down into the bottom of the crack...

    =20

    =20

    Put your epoxy into a syringe (available at farm supply stores) and =
get a drill bit the same size as the end of the syringe (leave needle =
off). Then start your hole about =BD inch from crack at about a 60 deg =
angle down, so that the bit comes out into the crack about an inch below =
the top. Inject your epoxy into this hole and it you can watch it fill =
the crack from the bottom up. You'll need to drill holes about every 3-4 =
inches.

    Dean

    =20

    Dean May             cell 812.239.3359

    PianoRebuilders.com   812.235.5272

    Terre Haute IN  47802

    =20

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