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<blockquote data-quote="JohnNephew" data-source="post: 882183" data-attributes="member: 2171">Warped hardcovers are generally the result of a glue vis a vis humidity/moisture.&nbsp; We've had to send books back to the printer for de-warping.&nbsp; What they do is actually just to wipe down the books' inside covers, on the endpapers, with a damp sponge.&nbsp; Put some cheap cardboard/particle board in there, between the endsheets, and put something heavy on top.&nbsp; Leave overnight.&nbsp; The tiny bit of moisture will loosen up the glue and label and allow the cover boards to return to their natural flat shape.It seems to me that we've had the biggest problems with warping in the winter (when it's very dry), and conversely books that we've had in the warehouse through the summer (with higher humidity) seem to lose the problem.&nbsp; Sometimes too problems crop up when a printer makes some minor change in their plant -- storing books in a different (hotter/colder/wetter/dryer) corner of their plant, or switching glue brands, or what have you.</blockquote>

[QUOTE="JohnNephew, post: 882183, member: 2171"] Warped hardcovers are generally the result of a glue vis a vis humidity/moisture. We've had to send books back to the printer for de-warping. What they do is actually just to wipe down the books' inside covers, on the endpapers, with a damp sponge. Put some cheap cardboard/particle board in there, between the endsheets, and put something heavy on top. Leave overnight. The tiny bit of moisture will loosen up the glue and label and allow the cover boards to return to their natural flat shape. It seems to me that we've had the biggest problems with warping in the winter (when it's very dry), and conversely books that we've had in the warehouse through the summer (with higher humidity) seem to lose the problem. Sometimes too problems crop up when a printer makes some minor change in their plant -- storing books in a different (hotter/colder/wetter/dryer) corner of their plant, or switching glue brands, or what have you. [/QUOTE]

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