Hi David I don't know any one doing straight compression crowning but my guess is that it might yield approx 6 to 7 mm crown on a long rib...say 40inches. Guess sit depends on how dry things got before ribbing. Dale Question for those of you who do straight (or pretty much straight) compression crowned boards. What kind of crown do you typically see on your boards before they are loaded? Please give me a rib length (approximate is ok) as well as the amount of crown (mm preferred). Small research project. Thanks David Love davidlovepianos at comcast.net -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20060508/372f3d35/attachment.html
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