Friends, I am still a little stymied on using CA on pinblocks. (Aren't we good at pounding this subject to death?!) I only recently started doing this and have done maybe three or four so far. I heard someone in a convention mini-technical say you only need three or four drops; I think he said four. So I applied enough so I could see it wick around the entire pin. That used about 1/3 bottle and wasn't too successful. I also used an entire 2-oz. bottle on an old upright. I just kept going over the pins until the bottle was empty. That covered all the pins twice and most of them three times. When I went back to tune the piano a couple weeks later they were so tight they felt like they would twist off! So I know my experience is limited, but it makes me wonder if two or three bottles really do any more good than one. Is it too much of a good thing? I do feel that several drops aren't enough, unless the pins weren't all that loose to begin with. Comments? Regards, Clyde Farrell wrote: > I have used CA with good sucess in general. I glued a block in a cheap grand > (loose AND very jumpy pins) a couple weeks ago and it was my first total > disaster with CA. A waste of time and glue (and her money). No beneficial > effect at all. I ended up shimming 28 pins and told her that next time there > will likely be a few more. Shame, piano was recently restrung. Guess the guy > (or gal) didn't know tuning pins get loose. > > The few other times I sucessfully used CA, I have used 2 or 3 of the 2 oz. > bottles - I gooped in in until it would not go in any more. Some recent > posts suggested just a few drops is all that is needed. So this time I used > less - about 1 oz. total. I wonder if that is why it did not work this time. > > Terry Farrell > Piano Tuning & Service > Tampa, Florida > mfarrel2@tampabay.rr.com > > ----- Original Message ----- > From: "Richard Brekne" <Richard.Brekne@grieg.uib.no> > To: <pianotech@ptg.org> > Sent: Thursday, September 21, 2000 8:41 AM > Subject: Re: Dopey Tuning > > > Course there is pinblock dope and there is pinblock dope. Actually the old > Pin > > tite and similiar products are quite different approaches from CA and > Epoxy > > methods and I am not sure the "dope" is the right word for these latter. I > never > > had any good results from the old style of dope either and what you > describe is > > what I always ended up with.. stopped useing that kinda thing long time > back > > now. > > > > I have heard some say that applying CA to pinblocks that have been treated > thus > > can greatly improve the situation, but CA is something I have very little > > experience with so I will leave that to others to confirm or deny > > > > > > Farrell wrote: > > > > > Well, last night I tuned my first (for sure) pin block doped piano. 1926 > > > Cable upright - much better than average condition - grandmother bought > it > > > new. Bass restrung about 15 years ago. The tuning pin collars were > black, > > > and some dark tarry-looking goop was on plate in tuning pin area (likely > > > doped at time of bass restring). And EVERY pin was REAL MUSHY! A bit > hard to > > > tune - seemed like you needed a new hammer technique. It felt like > someone > > > put a thin collar of neoprene around each tuning pin. Torque was > typically > > > pretty low, likely ranged from 20 to 50 inch-pounds (estimate). It just > felt > > > like notes were going to start creeping flat as I was driving home from > the > > > job. Is this a problem with doped pinblocks - creeping flat in short > periods > > > of time? > > > > > > Terry Farrell > > > Piano Tuning & Service > > > Tampa, Florida > > > mfarrel2@tampabay.rr.com > > > > -- > > Richard Brekne > > RPT, N.P.T.F. > > Bergen, Norway > > > > > >
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