Yeh, but where are we going to find the synthetic sheep, Thumpe? Will Truitt From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Euphonious Thumpe Sent: Friday, November 30, 2012 8:34 AM To: pianotech at ptg.org Subject: Re: [pianotech] Brighter Yamaha P.S. And another good reason for the development of synthetic wool for piano use (besides the serious effect of humidity on hammer tone with sheep's wool) is "touch". Sheep's wool probably expands when humid, affecting touch via increased friction on contact points ( and encouraged swelling of adjacent wooden parts) and also via increased hammer weight. Thumpe _____ From: Delwin D Fandrich <del at fandrichpiano.com>; To: <pianotech at ptg.org>; Subject: Re: [pianotech] Brighter Yamaha Sent: Fri, Nov 30, 2012 5:55:38 AM Wool is hygroscopic. It does absorb and desorb moisture and the tone characteristic changes as a result. Normally the change is slight and gradual. This may not be so slight. I'd certainly let time do what it will before attempting to chemically harden hammers that already have the reputation of being granite in disguise. And then, if they do not harden up enough to cause permanent hearing damage after they have dried out I'd sand off a layer before pouring on the chemicals. And, as Ron suggested, I'd try ironing them a bit. ddf Delwin D Fandrich Piano Design & Fabrication 6939 Foothill Court SW, Olympia, Washington 98512 USA Phone 360.515.0119 — Cell 360.388.6525 del at fandrichpiano.com <javascript:return> — ddfandrich at gmail.com <javascript:return> -----Original Message----- From: pianotech-bounces at ptg.org <javascript:return> [mailto:pianotech-bounces at ptg.org <javascript:return> ] On Behalf Of tnrwim at aol.com <javascript:return> Sent: Thursday, November 29, 2012 8:30 PM To: Pianotech Subject: Re: [pianotech] Brighter Yamaha Thanks for the advice, so far. As a follow, I've that high humidity has an effect on hammers. This piano sat in empty house for five years in Hilo, but was moved to Oahu 2 weeks ago and is now in an air condition hall. Hilo is on the Windward side of the Big Island of Hawaii, where it rains A LOT. The piano is only 6 years old and has never been used. It has had a string cover and a damp chaser, so there no damage, and the hammers are virtually brand new. Would the being exposed to a lot of humidity be the reason the hammers are soft, and if I just wait 6 months they will brighten up by themselves? Wim Sent from my iPhone On Nov 29, 2012, at 3:57 PM, tnrwim at aol.com <javascript:return> wrote: > We usually have knock the edge off Yamaha hammers. But a church just got a small grand where the killer octaves need a little boost. What is the recommended method for "juicing" up Yamaha hammers > > Wim > > Sent from my iPhone -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20121130/4e92a0d8/attachment.htm>
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