Collegues, I've build my first soundboard and I have to say, It looks very good. I also glued the (flat) ribbs on and gives a crown, about 3/8 inch by bending them, during gluing, with an compressed air press. But a week later, I could not place the board in the piano earlier, the crown diminished and the board returned to be as good as flat. My question is: is this normal or what is the cause. And is there somebody who can tell me how much crown he gives and what's staying after a week, month (I mean the board only stocked in the shop, not placed in the piano). Thanks a lot for the replies. Peter Kestens
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