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See my reply to Susan.
=20
Del
_____ =20
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On =
Behalf Of
Greg Newell
Sent: September 17, 2005 6:49 AM
To: Pianotech
Subject: Re: Ok, This is weird
Dave,
That's an interesting thought and a possible resolution to the =
crisis
but it doesn't answer if anything could or should be done with a warped =
plate. I
may go back to the call I had last night at my own expense to see if the =
glide
bolt adjustment will work. I don't mind eating a little for my own =
education. I
still wonder 1) could this have happened some time after manufacture and =
2) If
not, why was this ever sold in the first place?
Greg
At 10:22 PM 9/16/2005, you wrote:
Greg,
=20
I had this happen on a brand new BB Mason and Hamlin not so long ago. I =
raised
the glide bolts, and it slipped right out. They'd been cranked WAY =
down, though
I couldn't figure out why. The keyframe was up about 1-16 inch higher =
than it
should have been. =20
=20
=20
I hope this helps,
=20
Dave Stahl
=20
In a message dated 9/16/2005 4:14:50 PM Pacific Standard Time,
gnewell@ameritech.net writes:
Listees,
I've never encountered this before and now I've seen it twice =
in=20
the same week. 2 pianos both from very different manufacturers and from=20
different eras coming in to my neck of the woods from 2 entirely =
different=20
climates and regions both have the same problem. I went to each of these =
customers homes and for one reason or another found it necessary to pull =
the action. (Sorry, both are grands). I found that the pin blocks were=20
touching the center 2 octave action screws and it was impossible to pull =
the action as we normally due. I was able to pull off the stretcher on =
one=20
of these and found to my surprise that the pin block was intact. No=20
delaminations at all which is what I expected to find. Instead I found=20
after fishing out one of my most important tools (string) that the plate =
was warped downward in the center by roughly 3/8" or 10 mm pushing the =
pin=20
block into the action.
If any of you have ever run in to this problem especially in a=20
rebuilding capacity, what if anything have you done about it? I know of =
no=20
way to un warp cast iron so I suppose that's out of the question. Is the =
piano scrap now? Is it possible that the warp happened recently and did =
not=20
exist at the time of manufacture?
FWIW, one of the pianos is a 70yr old (or there abouts) Henry =
F.=20
Miller grand and the other is a 15-20 yr. old Schumann (Samick product). =
The first actually has some potential to be a fine instrument if it =
weren't=20
for the warped plate. The second never was and never will be anything =
but a=20
=20
Greg Newell
Greg's piano Fort=E9
mailto:gnewell@ameritech.net=20
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