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Joined: Jun 2001
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Have any of you ever used CA glue to brighten hammers? I had limited time to brighten about 20 hammers before a concert. Hot ironing them worked on all but one that I could not get bright enough. In a pinch I put on a very slight amount of gap filling CA glue. It dried in 10 minutes. I had to needle it a little to soften it but it seemed to work fine. Any ideas?
pianoseed
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Really no different in principle than lacquering a hammer, just dries faster. Some techs use a solution of plastic keytops dissolved in acetone for this purpose. Niles Duncan Piano rebuilder, Pasadena, CA www.pianosource.com
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Thank for the reply,Niles.
pianoseed
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Thammer, When you use lacquer for voicing,what is the best ratio for lacquer to thinner? Does this normally require needling after? What is usually the drying time required between application and reassemble? Thanks for the info. Jon 
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When I lacquer hammers (which isn't often) I mix a very thin, practically water thin solution, probably about one part lacquer to five parts thinner or so. I brush it on the shoulders and it wicks into the felt. If it doesn't wick in it's not thin enough. When the piano sounds like tin cans it's dry. Then you get out your needles and voice. Niles Duncan Piano rebuilder, Pasadena, CA www.pianosource.com
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pianoseed
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In a pinch once I "Brightened a couple of really dead upper treble hammers in a Steinway with the Ultra thin version of C+A glue. Ouch!! Way too bright!! So I softened them with pure acetone, which is the active ingredient in the C+A remover. The over all effect was most satiafactory. It took the hard lump of glue at the crown and dispersed it through out the rest of the hammer. It was then very easy to needle the tips down just a little bit. After they dried they were stable and quite manageable.
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This is sure to start a stir;Try dippin'em in (Aunt Mable's)Soppin syrup! In the words of Joe Walsh; Not Seariously Folks!
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Thomas, I had the same problrem with ultra thin CA glue a few years ago. I thought I would never get the hammers needled soft enough. That is why, in a pinch I used wee dab of gap filling CA glue. It did not absorb into the felt so readily and could be sanded off if necessary. I was reluctant because of my previous experience, but I knew that this pianist was really finicky and would notice the softer note immediately. It worked and he was happy and so was I. I have found that one tries to avoid things that are difficult to undo on concert pianos because the next pianist might want something different, like softer hammers. Thanks for responding.
pianoseed
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