---------------------- multipart/alternative attachment Terry, I just went back to tune a old upright piano today that I had treated with CA via syringe with the piano standing up, there was little room for laying it down. I had the same problem with the deep bass rapidly swinging the tuning hammer back as soon as I let go of it. I followed the treatment with a pitch-raise. I did the upper first and then came back down to the pins I had treated. The second time around I lowered the pitch first in case any CA had made it down to the pins on the plate just below the tuning pins. There was a definite feel of "breaking loose". I was worried about that but the torque staid good for this, the second tuning. More loose pins have turned up in the treble as well as a lot of false beats in the killer octave. I tried leveling the strings below the pressure bar but that didn't make much difference so I'll be looking at CAing the pins on the bridge, maybe; removing the strings first from them might not fit their budget. Has a lot of loose center pins too, flat and grooved hammers etc. just have to convince them to buy a new piano. Andrew At 09:51 AM 3/8/2004 -0500, you wrote: >FYI: > >I CA-treated the pinblock of an old upright six months ago. Dozens of pins >were so loose that they immediately spun back on their own after raising >the pitch. I tipped the piano back and applied two bottles of thin CA >(after spending 20 minutes trying to talk the lady into dumping the >piano). It was quite apparent that the pins had been doped some years ago >- plate was all stained at the tuning pins and the feel of the few pins >that had any torque was very spongy. The CA treatment seems to work well a >couple days later when I pitch-raised and tuned the piano. > >I went back there last night to tune. Three pins had let go. I gave them a >tap or two and they then had a very solid feel. All the other tuning pins >had good to great torque and very good feel. > >This piano had a full plate with no tuning pin bushings. > >Bottom line: CA worked great on this previously doped block. Your results >may vary. > >Terry Farrell ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/84/89/0d/5e/attachment.htm ---------------------- multipart/alternative attachment--
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