loose pedal lyres

[Joe And Penny Goss]

Hi all,
Kind of sounds like CA may be a clone of drop action Betsy Ross Lester
elbows.
Early demise after birth.
Joe Goss
imatunr@srvinet.com
www.mothergoosetools.com
----- Original Message -----
From: "Keith Roberts" <kpiano@goldrush.com>
To: <pianotech@ptg.org>
Sent: Tuesday, February 19, 2002 8:47 AM
Subject: Re: loose pedal lyres


> The main complaint about CA glues is they seem to have a life span of 3 to
5
> years. Actually what happens is they get brittle. A tap with a hammer or
> drop it lightly and the glue turns like a tempered glass window. Dust.
This
> is why it is not recommended to use CA glue to fill or span gaps. The
least
> gap, the least amount of glue = the stronger joint, the longest life span.
>
> Keith R
>
>
>
> ----- Original Message -----
> From: "Dave Nereson" <dnereson@dimensional.com>
> To: <pianotech@ptg.org>
> Sent: Monday, February 18, 2002 11:56 PM
> Subject: loose pedal lyres
>
>
> >           What do you guys and gals do with loose pedal boxes, besides
> > putting a book underneath (just kidding)?  I've always taken the lyre to
> the
> > shop, drilled out the wedges (much drilling with different size bits at
> > various angles, followed by careful chiseling and gouging) until it will
> > knock apart with a rubber mallet, then sand, chisel, scrape off as much
> old
> > glue as possible to get maximum bare wood exposure (but trying not to
> reduce
> > the dimensions of the tenons or expand the holes too much), then glue
the
> > whole thing together and insert new hardwood wedges (which I usually
have
> to
> > make myself, axe and hammer handle wedges being too small -- does
anybody
> > sell bags of pre-cut wedges for piano lyres?), then clamp the whole
> assembly
> > overnight, then the next day, trim the ends of the wedges, clean up and
do
> > minor touch-up  --  quite time consuming.    One tech I know doesn't
> > bother -- he just CA-glues the heck out of it and says he's never had a
> > problem, but I don't trust it to last over the years.   If you do it the
> > long way, do you pound the wedges in while you're glueing the posts to
the
> > top block and pedal box, or do you wait until the assembly has dried,
then
> > pound the wedges in last?
> >     With some Asian pianos, loose lyre parts produce "polyester squeak",
> > where two polished surfaces squeak against each other.  I've tried to
> > chisel, sand, scrape the polyester away so I can glue bare wood to bare
> > wood, but polyester and any type of glue, for that matter, really soaks
> into
> > the grain and makes the wood more like a hard plastic.   The pedal box
> > sometimes isn't entirely of wood -- there can be a plastic insert
> (mortise)
> > where the tenon enters the pedal box but you can't see it because the
> > polyester finish hides it.  It doesn't chisel, sand, or scrape without
> > chipping or breaking or sending a crack across the whole top of the
pedal
> > box.  I guess CA would work here, but does it hold?  Will it last?
> >
> >                             --David Nereson, RPT, Denver
> >
> >
>