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In a message dated 10/28/2004 4:47:40 AM Pacific Standard Time,
pianoman@accessus.net writes:
Jim
I'm currently working o 20s D lid that has one hairline crack along a
tongue & groove joint on the tail. This lid is very wash boardy & we've sanded it
cross grain a fair bit to level it out. I'll repair the crack. As far as
stress on long panels I don't agree, as most have multiple cross braces & also
the lids of concert grand's & other with longer lids are more likely to be
closed than open. Know what I mean?
Also a hairline crack though not visible initially will show up right thru
the finish, usually about the time you want to deliver it.
Dale Erwin
On long grands where the lid has been kept mostly in the up position you can
imagine the stress, over the years it put on the glue joints on the long
core panels glued together for the lid with only support on one end and the
other just kind of hanging out there. It is a wonder that we do not seem
more of this in anything over 6'. I do not know if they used any special
types of joint between the boards or if they were all just edge glued. Any
one tore one apart to see.?
Jim
Erwins Pianos Restorations
4721 Parker Rd.
Modesto, Ca 95357
209-577-8397
Rebuilt Steinway , Mason &Hamlin Sales
www.Erwinspiano.com
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