9' , 1928 Kimball Welte-Mignon reproducing grand piano.

[gordon stelter]

--- gordon stelter <lclgcnp@yahoo.com> wrote:
> And wear a carbon filter mask and goggles! I'm sure
> breathing this much CA fume is not good for you!
> --- Billbrpt@AOL.COM wrote:
> > In a message dated 7/30/02 11:30:39 PM Central
> > Daylight Time, 
> > mfarrel2@tampabay.rr.com (Farrell) writes:
> > 
> > 
> > > One clear thing I have noticed about CA glue is
> > that it has little shear 
> > > strength. Take two flat pieces of wood. Glue the
> > flat faces together with 
> > > CA (I would use thick or medium). After cure,
> just
> > tap the end of one of 
> > > the boards while holding the other (so that you
> > are applying a shear 
> > > stress) - they will break apart very easily. I
> > often use this to my 
> > > advantage when making temporary jigs (like for
> > locating bridges, etc.).
> > > 
> > I haven't been able to follow much of this or any
> > recent threads but this 
> > caught my eye.  The fact that the shear strength
> is
> > weak is why CA glue 
> > pinblock doping actually works.  If the glue could
> > really hold the pin, it 
> > would be stuck so hard and fast that it could only
> > break when trying to turn 
> > it.  Yet, the bond gives way on first impact but
> the
> > material has still 
> > filled a gap and is nevertheless somewhat sticky. 
> > This sometimes makes for a 
> > good repair for loose tuning pins.
> > 
> > This also is the reason why CA glue is good for
> > repairing stripped screw 
> > holes.  I usually put some glue in the stripped
> > hole, dip the screw in the 
> > catalyst, then insert the screw.  It goes in
> easily
> > but within seconds, the 
> > glue is cured and initially, the screw is stuck. 
> > But one turn with a 
> > screwdriver and the initial bond is broken,
> leaving
> > a filled gap and a sticky 
> > surface.  The repaired screw hole often feels like
> > it had been plugged with 
> > hard rock maple and redrilled.  If a first attempt
> > at this is less than 
> > satisfactory, then a repeat attempt will often
> work.
> > 
> > One person asked me privately about restringing
> > using CA glue as pin driving 
> > fluid.  The same idea works here.  If you are
> > restringing a piano with pins 
> > that had a good feel, using CA glue as pin driving
> > fluid will allow you to 
> > use the same sized pin again, avoiding the trauma
> to
> > the pinblock of using 
> > over sized pins.
> > 
> > One caution about doing the latter, cover your
> > support jack with something 
> > disposable because some CA glue could run down and
> > glue the support jack to 
> > the underside of the pinblock.  But again, even in
> > the event this happens, a 
> > good, sideways whack with a sledge hammer will
> break
> > the bond instantly.
> > 
> > Bill Bremmer RPT
> > Madison, Wisconsin
> >  <A HREF="http://www.billbremmer.com/">Click here:
> > -=w w w . b i l l b r e m m e r . c o m =-</A> 
> > 
> 
> 
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