Hide Glue

[Erwinspiano@aol.com]

---------------------- multipart/alternative attachment
 
Dittos David.
            Especially when we are considering how many times a set of key 
bushings may be  replaced in a high use piano. ie. a set of front bushings  
other year on  the glissando & heavy  use pianos. With Pvce it's a  miserable job 
to get key bushings  out & it is  destructive  ususally removing mortise  wood 
in the process  thereby changing the nicely machined dimensions of the 
mortise. I consider  pvce glue for this application.......well... .... mal practice. 
flame  suit on.
  If this is what the asian pianos use for hammer  head/keybushings glue I 
wish they'd use something else. It's an almost  impossible job to get the stuff 
off & I've done this often when the shanks  are still basically pristine & 
worth reusing.
  We've used cold hide glue for hammer hanging for years  with great success. 
It's easily reversible & easy to re-hang treble hammers  to tweak the strike 
line for optimal power & sustain & I do this  often. It's working time is 
wonderful & strength is plenty.  Just make sure it's in date.
  Joe thanks for all the great info.
  Dale Erwin

David Love said: "The nicest thing about  hide glue is the reversibility.  
Removing  bushings
glued in with PVC-E is a  pain.  Bushings glued in with hide glue will nearly
fall out  when saturated with an application of water spiked with a small
amount of  the surface tension reducer of your choice.  Hammer heads won't
click  with hide glue if the fit is reasonable and if you apply it to both
parts  before assembly (and if you use a bit of urea to be sure assembly
takes  place before the two surfaces gel and won't bond as well).   I've
recently tried using Franklin's Trim and Molding Glue for hammers and  it
worked nicely.  But I had to remove a set glued on with it and  while it was
no trouble to heat the joint and remove the hammer head, I  found it
difficult to get all the old glue off the shank.  When heated  it turns into
a kind of sticky rubber band that doesn't really come off  that easily.  The
hide glue softens up nicely and can be heated to a  crystalline state where
the poorly named "Hammer Shank Reducer" works  quickly and effectively to
remove the old glue without "reducing the  shank


 

---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/5d/9f/0e/2d/attachment.htm

---------------------- multipart/alternative attachment--