CA glue on loose hammers

[Dean May]

Hey Ric

My experience parallels Jon's. I always use a spritz of accelerator in a
loose wood joint. Otherwise no glue remains in the joint, it all soaks into
the wood. It is something of a mystery as to why it ended up looser. 

I do the same for bridge pins, usually. I'll lightly spray and wait for a
minute or two before applying CA. This delay will also delay the glue set
up, giving it a little more soak in time and preventing the bubble build up
on top of the bridge. 


Dean
Dean May             cell 812.239.3359
PianoRebuilders.com   812.235.5272
Terre Haute IN  47802


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ric Brekne
Sent: Sunday, April 23, 2006 6:27 AM
To: pianotech at ptg.org
Subject: CA glue on loose hammers


Hi John.

 Thanks... makes sense when you first stop to think of it.  I will 
remember.  On the other hand I thought if you applied enough it would 
soak into the wood only so far and then fill in the gap.  If it doesnt 
do this really.... then what about <<fillining>> bridge pin holes ?  I 
understood folks were just using CA straight up for that application.  
For that matter....  what about tuning pins ? 

What I dont understand about the shank / hammer head experience tho is 
that the hammer was actually significantly looser when I came back 
yesterday... way more wobbly. Almost like the shank just plain 
shrunk...sounds unlikely but thats the feeling I got.  That despite a 
slight buildup of glaze on the inside of the hole in the hammer. 

Cheers
RicB


John Page writes:

The CA wicked away from the joint via the grain. Had you given it a shot
of accelerator first the CA would have remained in the joint.

This method has to be done for reinforcing any joint, grand jack mortices,
wippen support posts, upright jack support posts.

Accelerator, CA, accelerator.

Apply the accelerator to the opposite side of the joint to where you
apply the CA, if possible.
-- 

Regards,

Jon Page