What I found surprising was that this phenomenon could occur in pianos only 4 years old. Joe, are there any manufacturers not using some kind of lubricant (whether emralon, dag, or something else) in spring grooves? They all seem to have something in there. Do you think just cleaning out the grooves (during restoration or even regulation work, esp. on older pianos) and polishing the spring is the best course? Allen On Jul 30, 2010, at 3:37 PM, J Patrick Draine wrote: > Whether the slot is naked, or coated with graphite, permalon, or > other substances, burnishing would help the situation considerably. > Patrick > > On Fri, Jul 30, 2010 at 10:30 AM, Joseph Garrett > <joegarrett at earthlink.net> wrote: > > "I wonder if permalon (sp?) - the green stuff - might in fact be > better, because it's harder?" > > IMO, no lubricant is adviseable! No need. The lubricity between > brass and hardwoods, such as hornbeam and maple is sufficient and > consistant. > Joe > > > Joe Garrett, R.P.T. (Oregon) > Captain, Tool Police > Squares R I > > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100730/032492b1/attachment.htm>
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