Jumpy Tuning PIns

[John Ross]

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Hi Bob,

How many pins are we talking about?

Where did you hear to try naphtha, I would think that would cause jumpy =
pins?
I think that would contaminate the pinblock.

You have to isolate the contaminant from the pin. Seal with CA, and shim =
with veneer to get the smooth feel back.

I hadn't heard of sanding sealer being used either. I have heard of spar =
varnish being used.

>From what you say the real fix is a new pinblock. Is the piano worth it?

Regards,
John M. Ross
Windsor, Nova Scotia.
jrpiano@win.eastlink.ca
  ----- Original Message -----=20
  From: Hullfam5@AOL.COM=20
  To: pianotech@ptg.org=20
  Sent: Friday, June 07, 2002 10:05 PM
  Subject: Jumpy Tuning PIns


  I am restringing an old upright, open face pinblock, with 4/0 pins and =
encountering jumping and creaking in the pins.  Torque is coming out to =
be anywhere from 100, 140 and 160.  Several of the holes may have been =
doped as they have a black half circle, top side of hole, about 3/8 inch =
deep. The jumping is so bad I don't think it will be very difficult to =
tune.  I've tried reaming, naptha, sanding sealer and 3/0 pins with =
small to no improvement resulting. =20
  Bob E. Hull, RPT=20

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