Where did they add it exactly? Del has contributed to this topic before and I wonder if he had anything to do with that. One other note, if you are able to know about how much mass loading in advance you can also bury some lead in the bridge body before you recap it. For us mortals, however, it seems to be more of a trial and error thing to find out how much you need exactly. I'm not really adding the treble fish these days on soundboard projects and without that I haven't found that mass loading is necessary. I also wonder on pianos with treble fish if thinning the board behind the treble bridge will reduce the need for weighting since it reduces the effective stiffness. David Love www.davidlovepianos.com From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of G Cousins Sent: Tuesday, April 28, 2009 6:34 AM To: CAUT Subject: Re: [CAUT] Soundboard weighting David, Baldwin did some production on their model 7000 with ading (weighted) mass to the board. Augmented the upper registers very efficiently. Yet another innovative design from the original Baldwin folk. Gerry -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut_ptg.org/attachments/20090428/17bd37be/attachment-0001.html>
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