[pianotech] Old Kranich and Bach Grand RE:CA GLUE

[Mike Morvan]

Paul,
    I can't agree with you more. Because of it's convenience, I believe CA 
glue is possibly being overused in our profession.
    You also bring up a good point often not considered by many of us, 
because of it's high absorption rate into the wood, CA glue penetrates the 
wood pores up to 1/16th of an inch and  it complicates or prevents proper 
repairs in the future.  Mike

BLACKSTONE VALLEY PIANO
Michael A. Morvan
76 Sutton Street
Uxbridge, Ma 01569
(508) 278-9762
www.pianoandorgankeys.com
mike at pianoandorgankeys.com
www.thepianorebuilders.com
----- Original Message ----- 
From: <pmc033 at earthlink.net>
To: <pianotech at ptg.org>
Sent: Sunday, July 26, 2009 10:16 AM
Subject: Re: [pianotech] Old Kranich and Bach Grand


> Years ago, I used CA glue to attempt to repair some S&S jacks that had
> become loose.  It worked, or at least it did for a while until I visited
> the piano a few months ago.  Many of the jacks were failing.  With this
> experience, I would not recommend using CA glue on wood joints.  It
> penetrates the wood, making it doubtful that subsequently using wood glue
> would create a reliable bond.  The glue that Coleman sells, which is a
> combination epoxy/CA, might work, but in any case I would disassemble the
> parts, apply the glue, and reassemble them.  Dripping thin CA glue might
> fill the gap, but a good bond with thin CA glue never worked well for me.
> YMMV,
> Paul McCloud
> San Diego
>
>
>> [Original Message]
>> From: Dean May <deanmay at pianorebuilders.com>
>> To: <pianotech at ptg.org>
>> Date: 07/25/2009 6:15:03 PM
>> Subject: Re: [pianotech] Old Kranich and Bach Grand
>>
>> Spray first with accelerator, wait a minute, then a tiny drop of thin CA
> on
>> all the joints. Problem solved.
>>
>> 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 Clark A. Sprague
>> Sent: Saturday, July 25, 2009 8:35 PM
>> To: pianotech at ptg.org
>> Subject: [pianotech] Old Kranich and Bach Grand
>>
>>
>> Hi, all!  It sure was nice to see a lot of you at Grand Rapids, and to 
>> put
>> faces with names.  What a great resource this list is.
>>     That said, I went to an old Kranich and Bach grand today, that had 
>> the
>> board shimmed, new pinblock, new hammers with shanks and flanges.  But,
>> alas, not new whippens.  The old things are letting go glue joints,
> notably
>> the jack tenders.  Whoever did the job meticulously replaced all those
>> notorious little spring cords, but now glue joints are failing.
>>     Having talked about new whippens with the customer,  nothing in the
>> Renner kit works, or the Pianotek catalog, or the new WNG kit so
> graciously
>> given out in GR.  It seems that the K&B whip is shorter in the distance
> from
>> the flange center to the jack center.
>>     Anybody ever modify whips to accomplish the task?  Or what?   Besides
>> the obvious answer of a match and some flammable liquid!  Customer seems
> to
>> want to spend the money.
>>
>> Clark A. Sprague, RPT
>> csprague4 at woh.rr.com
>>
>>
>>
>
>
>