backchecks

[Chris Gregg]

I just did a set for an old Broadwood and also the hammer butts (a direct 
blow grand action).  I used hot hide for the whole works.  Something tells 
me it is the right thing to do. I have found a great new source for hot 
hide glue.  The local book bindery.  They buy it by the sack and it is by 
far the nicest hot hide glue I have ever used.  It does not have to soak 
for a day before it is heated, seems to have low evaporation, gels fast and 
hardens extremely well overnight.

Chris Gregg


At 08:11 PM 01/19/2005, you wrote:

>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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