Where ya from there Peter ?? As to your question, I think you will have to provide us with just a tad bit more specific information. As in... how dry did you get the board before glueing the ribs on.... etc. Tell us the whole story in detail and I am sure you will get the answer you are looking for Cheers RiCB Peter Kestens wrote: > > 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 > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html
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