Cy, wouldn't the damage result from very high humidity in the summer followed by very low level ? Thank you for the great links. David, I will add this to my "testimonial collection" Allan Sutton, m.mus. RPT www.pianotechniquemontreal.com 2010/6/20 Porritt, David <dporritt at mail.smu.edu> > Allan: > > > > I had a customer with a 9’ Bösendorfer who had a free standing humidifier > next to the piano. In spite of the fact that students came into the room > from outside every 30-minutes for their lessons, it was disappointing how > seldom I got to tune that piano. Even when I was called to tune it I did > embarrassingly little to it. > > > > dave > > > > David M. Porritt, RPT > > dporritt at smu.edu > > > > > > *From:* pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] *On > Behalf Of *allan at sutton.net > *Sent:* Sunday, June 20, 2010 10:55 AM > > *To:* pianotech at ptg.org > *Subject:* Re: [pianotech] Low humidity ok ? > > > > Thank you Terry, > > > > That precision : "different pianos, different solutions" seems very > appropriate to me. > > > > Another question : Do many agree that a small external humidifier near the > piano will help significantly in adding some humidity to every part of the > piano when needed (soundboard and pinblock and action, in a grand piano), > albeit as a second choice to whole room conditioning ? > > > > Allan Sutton, m.mus. RPT > > www.pianotechniquemontreal.com > > 2010/6/20 Terry Farrell <mfarrel2 at tampabay.rr.com> > > Do many of you agree that stability is much more important than > maintaining a specific Relative Humidity level in the piano? > > > > More important, yes. > > > > > > And that too much humidity is worse than too little? > > > > Maybe yes, and maybe no. Both should be avoided. All depends on piano - old > piano with marginal soundboard crown and almost-loose tuning pins, higher RH > might work better for it. New piano that performs well at a lower RH, low RH > may be just fine for that piano. > > > > In other words, with an adjustable humidistat (Moisture King) and one or > two heat bars we can keep Relative Humidity at 30 % or even 25 % and that is > good, much better than swings from 25 to 85 % RH for example ? > > > > Steady 30 or 25% is better than 25% to 85% RH swings for sure. Steady 45% > or 50% is likely better than 30 or 25% RH. > > > > Steady is best. Mid-range RH is best generally. However, if the piano in > question performs better at a higher or lower RH, then an RH adjusted in > that direction may be beneficial. > > > > Terry Farrell > > > > > > On Jun 20, 2010, at 11:17 AM, allan at sutton.net wrote: > > > > Dear list members, > > > > Do many of you agree that stability is much more important than > maintaining a specific Relative Humidity level in the piano ? And that too > much humidity is worse than too little ? > > > > In other words, with an adjustable humidistat (Moisture King) and one or > two heat bars we can keep Relative Humidity at 30 % or even 25 % and that is > good, much better than swings from 25 to 85 % RH for example ? > > > > I found nothing in the archives about this specific question. > > > > I hope to hear you about this in Vegas and here on the list. Thank you. > > > Allan Sutton, m.mus. RPT > www.pianotechniquemontreal.com > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100620/958a6350/attachment.htm>
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