CA and Bridge Pins

[Don]

Hi there,

It stands for cynoacrilic glue. More commonly known as "crazy glue". It is
availabe in large sizes at most hobby shops.

At 09:42 AM 10/20/2000 +1000, you wrote:
>Not coming in at the start of this thread I'm a bit puzzled at the terms 
>CA glue and ' thin like water'.
>For the benfit of a dumb Aussie! Would CA stand for contact 
>adhesive?
>If it does, how do you thin it down to ' water thinness' ? Other than 
>heating it that is. I always thought an epoxy resin was the standard 
>bridge pin fixer!
>Cheers
>
>Jim Logan - Piano Tuner/Technician
>
>
>
>From:           	Kurt Matthies <kwgm@MESAINTERACTIVE.COM>
>To:             	"'pianotech@ptg.org'" <pianotech@ptg.org>
>Subject:        	RE: CA and Bridge Pins
>Date sent:      	Thu, 19 Oct 2000 10:55:45 -0600
>Send reply to:  	pianotech@ptg.org
>
>Susan,
>
>This is exactly what happens. The CA glue becomes solid, like cement, and
>holds the pin. You basically fill up the crack with the stuff, let it cure
>for a few minutes, and it does the trick. On the grand, gravity was a
>helper. If you could somehow tilt the upright so the bridge were horizontal,
>it would really help.
>
>--kwgm
>Kurt W.G. Matthies
>
>-----Original Message-----
>From: Susan Kline [mailto:sckline@home.com]
>Sent: Thursday, October 19, 2000 9:41 AM
>To: pianotech@ptg.org
>Subject: Re: CA and Bridge Pins
>
>
>At 11:10 AM 10/19/2000 -0400, you wrote:
>>In a message dated 10/18/2000 11:20:19 PM Pacific Daylight Time,
>>sckline@home.com writes:
>>
>> > Wiping off
>> >  the area after a few seconds, maybe breathing on it or rubbing it with
>> >  a little white glue to set it up,
>>
>>Greetings Susan,
>>As clever as the white glue discovery is for tacking two things together,
>>that's not the intent here. The CA is being used as a filler, and the ideal
>>situation would be for it to fill the bridge pin holes level with the
>bridge,
>>replacing only the space around the pin. Any additional
>goop/sticky/compound
>>would seem to be superfluous at best.
>>Cheers,
>>Bob Davis
>
>
>Hi, Bob
>
>Actually, I've been looking at the results of mixing the two glues, but I
>need to do more. If there is plenty of space, and plenty of both glues, it
>turns to a sort of hard froth. I haven't checked over time to see if it
>hardens further in a day or more.
>
>If the CA has wicked into the holes, it shouldn't end up being goopy, but
>should turn to a pretty hard material. The question is whether a thin
>smear of white glue to quicken its set time would end up gummy. Maybe
>not ... or possibly, it might be easy to remove later. I doubt that the
>white glue would penetrate the CA past the surface of the bridge, but who
>knows?
>
>I think I have a hunk of bridge off an old, long-dead piano. If I can find
>it, I'll try experimenting with it, and see what I get.
>
>Regards,
>
>Susan
>
>
>Jim Logan
>
>

Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.

Tuner for the Saskatchewan Centre of the Arts

drose@dlcwest.com
http://donrose.htmlplanet.com/

3004 Grant Rd.
REGINA, SK
S4S 5G7
306-352-3620 or 1-888-29t-uner