backchecks

[Alan]

Any reason not to use PVC-E with clamping for 1/2 hour or so? Haven't tried
it, anybody ... ?

Alan R. Barnard
Stickin' to it in Salem, MO


-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf
Of David Love
Sent: Wednesday, January 19, 2005 9:12 PM
To: ilvey@sbcglobal.net; 'Pianotech'
Subject: RE: backchecks


Hot hide will work.  Take a pair of shears and cut the leather in the middle
(since it's not glued to the leather you can just slip the shears between
the leather and the felt).  Peel off the leather and scrape the backcheck
clean as much as possible.  Put on a thin coating of hide glue on the wooden
part of back check first.  Don't use any urea in the mix as you want it to
set up as quickly as possible.  Let the glue thicken before you apply the
glue to the leather and glue the top of the back check first and do the
entire set from one end to the other.  Go back to the beginning and put the
glue on the leather for the bottom end and hold it in place with your finger
for a 10 seconds or so and go to the next one.  A clothes pin also works
well.  When you finish go back to the beginning and use a pair of flush cut
center pin knippers (like #230 in the Schaff Catalogue) to nip off the
excess on the low side of the back check.  To get it done in 2-3 hours, you
will need to precut the leather before hand and preheat the hide glue just
before you drive over to the customer's house (assuming you are doing this
on site) so that the glue will reheat quickly once you arrive.  

David Love
davidlovepianos@comcast.net 

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf
Of David Ilvedson
Sent: Wednesday, January 19, 2005 6:29 PM
To: pianotech@ptg.org
Subject: backchecks

List,

I have a Steinway D with numerous torn backchecks caused by poorly
shaped tails with deep checkering etc.   I need to repair and intend to
recover with buckskin.  I perused the archives and the only mention of
this was a good post by David Swartz.   He uses CA glue.   I do need to
do the repair within a time frame of 2 to 3 hours.   Would any other
glue work as well as CA without the wicking problems (if there are any)? I
would imagine hot hide glue would be the best but would the first gluing
hold after an hour enough to stretch the leather and glue the
other side?   I'm figuring on clothespins....

Thanks in advance

David Ilvedson, RPT




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