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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