wasted CA on grand pinblock

[Dean May]

I'll echo William's sentiments. The only time I've had glue run down onto
the keybed is when I tried putting on 4 oz. I've never had that happen using
less than 2 oz in 2 passes. Use a hypo oiler. Adjust the amount you put at
each pin so that it takes you 2 passes to get 2/3 of the 2 oz applied. If
one section is super bad (bass, low tenor) then use the rest of the glue in
that section on a third or fourth pass. If you put too much at once you'll
overflow what the hole can soak up and the excess will go somewhere else. 

 

And this is what happens when you put much more than 2 oz on a piano. The
glue will pool on top of the block or run down some seam. There is only so
much the hole will take. 

 

Dean

  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of William R. Monroe
Sent: Wednesday, November 08, 2006 7:59 AM
To: dnereson at 4dv.net; Pianotech List
Subject: Re: wasted CA on grand pinblock

 

Dave,

 

How much CA did you use?  It's about $10 for 2 oz., (and as I wrote earlier,
I'd rarely use that much for an entire block) not real expensive in my book,
if it can keep an instrument tunable till a rebuild is possible (or the
piano is junked for other reasons).  

 

Admittedly, not a pleasant experience, yours.  I've never had it happen to
me, but I can see that it wouldn't be a nice introduction.  Definitely hard
to know everything beforehand.  I don't know how you'd diagnose that type of
separation.  And, even if you managed to get it level, if it's separated,
the CA will typically run along the first seam it hits, so probably still
wouldn't have gotten in the block.

 

Oh, well.  If the same thing happened to me, it would not make me less
likely to try again.  I think yours is the exception, Dave.

 

Best,

William R. Monroe

 

    I  CA'd a grand pinblock yesterday, and it did tighten up the pins, but
I don't think all that much CA got down the tuning pin holes.  There was a
gap between the bottom of the plate and the top of the block, and the top
surface was downhill toward the belly rail, so a good deal of my CA ran
toward the back edge of the pinblock and dripped down onto the newspapers I
had on the keybed.  What a waste!  The stuff ain't cheap.  

    But how could I have known in advance that the top of the pinblock
wasn't level?  The top of the plate surrounding the tuning pins seemed
level.  If I had known, I would've jacked up the rear leg a bit.  But how
far?  If the plate above the pinblock isn't precisely a uniform thickness,
you can't be sure.  

    Now I'm reluctant to CA again if there appears to be a noticeable gap
between the plate and block (I suppose there's always some), for fear the CA
will just run all over the top of the pinblock and not get down the holes.

    --David Nereson, RPT

    

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