Liquid Wood...that would be nice David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "David Boyce" <David at piano.plus.com> To: pianotech at ptg.org Received: 1/7/2010 2:29:50 PM Subject: Re: [pianotech] Bluthner soundboard problems? >Since we've been talking a lot about glues lately (PVC-E and so on), >what I want someone to invent for my customer's Bluthner, sigh, is: > A magic liquid glue which can neatly be fed into a hairline soundboard >crack with a hypo oiler, and whose molecules have arms of Samson, which >will grab each side of the crack, and drag the two sides resolutely >together and hold them there, and the body of the molecules filling any >remaining gaps solidly and with the same acoustical properties as spruce. >It's not much to ask, is it?? >Best regards, >David Boyce. >> In the meantime, I would appreciate advice about what might be done >> with the soundboard? The very narrow splits are not nearly wide >> enough to shim. What, if anything, might be done? > >I've never seen a split or crack that was "wide enough to shim". You >have to make it wide enough by dragging out wood to provide a narrow >V-shaped groove to press the sliver into, and the best time to do the >work is >when the soundboard has as low moisture content as it will ever >experience. -- like right now in Scotland, for instance. But this work, >from the look of your pictures can't be done properly without removing >the iron frame. > >JD
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