Well, okay. I don't pretend to be an expert but ... When he said "cracked bridge" I pictured serious splitting——separation of laminations, or some such. In such a case, I would want epoxy for it's gap-filling, shear-strength, fiber-filling, and stable bonding characteristics. If it's just little eyelash cracks, I'm open to the CA option and have used it--especially when I don't want to loosen string tension, etc., to do a proper epoxy job. But I don't really know that it is working, though I'm sure it helps stabilize pins. For how long, I dunno. And don't get me wrong, I am a 100 percent convert to tuning pin CA work and have saved quite a few pianos with it, but I still think of CA as "superglue" and don't trust it where real solid bonding and shear-strength are required between porous surfaces, e.g., wood. So when I can clamp things, its Titebond or Elmer's Carpenter Glue for me. And when clamping is not possible or gaps are to be filled, e.g., large cracks around bridge pins, I like epoxy. Thinner is better, the kind that thins and activates with heat is ideal for bridge work, methinks. Any actual glue experts, out there? How about owner's/workers from big-time piano rebuilding shops? What is your counsel and experience? Alan R. Barnard Salem, MO -----Original Message----- From: Chris Henke [mailto:cjhpianotech@comcast.net] Sent: Thursday, September 16, 2004 5:22 PM To: Pianotech Subject: Re: CA Glue Alan, would you care to write a few words about why you prefer Epoxy for cracked bridges? Chris Henke Portland, Oregon ----- Original Message ----- From: "Alan" <tune4u@earthlink.net> To: "Pianotech" <pianotech@ptg.org> Sent: Thursday, September 16, 2004 11:12 AM Subject: Re: CA Glue > 1) Cracked bridge? No. Epoxy. But, to stabilize bridge pins—including > very minor eyelash cracks on pianos not worth major restoration or > repairs? Yes. (Oooh, Mrs. Zinser woulda thrashed me soundly for THAT > lousy bit of > English!) > > 2) Unk. > > 3) Because the CA repair here is not actually a "gluing" job, but > rather a "soaking up filling in the wood fibers then drying hard" kind > of job, I am of the belief that this repairs is relatively permanent. > Check back with me in 20 years ... > > Alan R. Barnard > Salem, MO > > > These questions should make for some interesting discussion: > > 1) who likes to use CA glue instead of Epoxy for cracked bridges, and > why? > > 2) How long is a cracked bridge repair using CA glue expected to last? > > 3) How long is a loose tuning pin repair using CA glue expected to > last? > > Thanks, Chris Henke > Portland, Oregon > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.760 / Virus Database: 509 - Release Date: 09/10/2004 > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.760 / Virus Database: 509 - Release Date: 09/10/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.760 / Virus Database: 509 - Release Date: 09/10/2004
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