Pinblocks, CA & Dope - an update

[Joe And Penny Goss]

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Hi Andrew,
The CA needs usually more applications when you treat the upright =
upright <G> If you have a micro fine needle you can slip it in at the =
top of the base of the pin and almost get the glue to do what it does =
when the piano is non-upright.
Joe Goss
imatunr@srvinet.com
www.mothergoosetools.com
  ----- Original Message -----=20
  From: Andrew & Rebeca Anderson=20
  To: Pianotech=20
  Sent: Monday, March 08, 2004 1:42 PM
  Subject: Re: Pinblocks, CA & Dope - an update


  Terry,
  I just went back to tune a old upright piano today that I had treated =
with CA via syringe with the piano standing up, there was little room =
for laying it down.  I had the same problem with the deep bass rapidly =
swinging the tuning hammer back as soon as I let go of it.  I followed =
the treatment with a pitch-raise.  I did the upper first and then came =
back down to the pins I had treated.
  The second time around I lowered the pitch first in case any CA had =
made it down to the pins on the plate just below the tuning pins.  There =
was a definite feel of "breaking loose".  I was worried about that but =
the torque staid good for this, the second tuning.  More loose pins have =
turned up in the treble as well as a lot of false beats in the killer =
octave.  I tried leveling the strings below the pressure bar but that =
didn't make much difference so I'll be looking at CAing the pins on the =
bridge, maybe; removing the strings first from them might not fit their =
budget.  Has a lot of loose center pins too, flat and grooved hammers =
etc. just have to convince them to buy a new piano.

  Andrew

  At 09:51 AM 3/8/2004 -0500, you wrote:

    FYI:
    =20
    I CA-treated the pinblock of an old upright six months ago. Dozens =
of pins were so loose that they immediately spun back on their own after =
raising the pitch. I tipped the piano back and applied two bottles of =
thin CA (after spending 20 minutes trying to talk the lady into dumping =
the piano). It was quite apparent that the pins had been doped some =
years ago - plate was all stained at the tuning pins and the feel of the =
few pins that had any torque was very spongy. The CA treatment seems to =
work well a couple days later when I pitch-raised and tuned the piano.
    =20
    I went back there last night to tune. Three pins had let go. I gave =
them a tap or two and they then had a very solid feel. All the other =
tuning pins had good to great torque and very good feel.
    =20
    This piano had a full plate with no tuning pin bushings.
    =20
    Bottom line: CA worked great on this previously doped block. Your =
results may vary.
    =20
    Terry Farrell
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