key bushing removal- choice of glue/Tom Driscoll

[Tom Driscoll]

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Joseph Garrett
Sent: Sunday, June 22, 2003 3:52 AM
To: pianotech@ptg.org
Subject: Re: key bushing removal- choice of glue/Tom Driscoll

Tom,
Yes, Wallpaper Remover will cause an adhesion problem on re-gluing.
Especially if you don't let it dry completely before putting the new
bushings in. DAMHIK! I've found that if WPR is used, you should let it
dry
at least 48 hours, to be safe.
As for using PVC-E to glue key bushings, I personally wouldn't. It takes
too
long to set up. It takes forever to get sufficiently hard, which allows
the
bushings to "squirm", which in turn makes it impossible to ease
correctly
and wears out the bushings faster. It can be removed almost as easily
with
heat/steam, but it is a bit more messy than hide glue.
Hide glue will bond better to whatever concoction Young Chang used to
glue
the original bushings in, IMO.
My suggestion is remove with heat/moisture/steam. Blow the dust off of
your
glue pot. Mix up a batch of good quality glue and get back the basics.
<G>
Hide glue is soooooo easy to use, I fail to see why other glues are
used.
But, that's just me.
Best Regards,
Joe Garrett, RPT, (Oregon)

Been There, Didn't Like It, So I'm Here To Stay! [G}

_______________________________________________
Joe,
	Thanks for the post.
	Being Mr. Nocturnal I decided to remove the old bushings
tonight.
I don't know what glue was used originally but they steamed out in a
matter of seconds. 
	As for the glue choice, I experimented with by some bushing
cloth and PVC-E on to some scrap wood, applied pressure replicating a
caulk in the mortise waited 20 minutes and examined. There was no
wicking problem and the bond seemed reasonably strong. 
	Interesting about the "squirming" - easing problem. I glued a
second sample and will try and steam that one off tomorrow
	Thanks again ,
	Tom Driscoll