Damaged Piano -- Update

Jeff Tanner jtanner@mozart.music.sc.edu
Thu Aug 22 13:28 MDT 2002


I've pulled the action and brought it to my shop.  Luckily, there appears
to be no moisture in the action stack (loosy goosy) and the hammers are
fine, but the keysticks from D18 to F#34 may be gone.  I'm afraid the
keyframe may be beyond repair.  Interestingly, the bass cheekblock shows a
lot of moisture damage to the finish, and the endpin is rusting, but the
first 17 keys move freely.  The keybed is very wet, and the moisture has
been there long enough for mildew to begin to form (which, in 75%+ humidity
for the last 3 months could have been just waiting to happen anyway).  It
also looks like the music desk may have limited the amount of water to the
pinblock area to just a few drops.  The felt under the strings near the
pins doesn't feel damp to the touch, and the dampers appear to have avoided
getting wet as well.  There is no evidence of water seepage from looking
beneath the pinblock.  The amount of water I described as "standing on the
plate" was probably no more than a tablespoon in the little serial number
triangle, with maybe a half a teaspoon near the pins at the break.  I am
not sure if this is "all that is left" or "all there ever was" of the water
in the pinblock area.  If relatively good pitch is any indication, we may
be ok here.

I am beginning artificial resusci...resussi...rescuss....CPR on the keys
and frame, just in case.  Should I leave the keys on the frame in hopes
that they will be held in shape by the pins?  or take them out of the frame
and take my chances on what interesting shapes come out?  I expect that
leaving them on the frame would significantly slow drying time and trap
moisture, especially in the mortise areas, making the potential for new
growth more likely.  But I'm going to start out that way until I get some
ideas from you guys.

I'm guessing a low wattage (like 8 watts -- yes I still have an old one)
Dampp Chaser hung under the keyframe wouldn't be a good idea?  I've got it
laying on a hand truck horizontally with a box fan blowing across it set on
low.

Jeff

Jeff Tanner
Piano Technician
School of Music
813 Assembly ST
University of South Carolina
Columbia, SC 29208
(803)-777-4392
jtanner@mozart.sc.edu




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