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 >> >> >> > > >
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