Reply by pjones46

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Posted on Wall unit bookshelf Shelving question - Warping walnut ???

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1001 posts in 2667 days

#1 posted 04-23-2013 03:40 AM

First, you can use dowels or biskets. There will be less warping / sagging with glued up shelving if you take care to use opposing grain directions, however, the shelves over 36” will be more prone to sagging under the weight. IMHO, either rethink the widths or increase the shelving to 5/4 glue up that should be sufficient for the 4’ shelves . I have also seen what I call strong backed shelves where a strip is glued and screwed to the bottom centers of the shelves to make them more rigid taking care to cut those strips so grain is perpendiclar to the downward force. IMHO plywood would be worse on the 4’ expanse…

-- Respectfully, Paul

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