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Shoutout to the guy in Buffalo who warned me about plywood sitting flat on a concrete slab
I stacked $600 worth of 3/4 inch maple plywood flat on my garage slab for two weeks while waiting on a hinge order, thinking flat was safe. Pulled the top sheet for a face frame job and it had a bow you could rock a chair on, and the bottom sheet had wicked up enough damp to start delaminating at one corner. Ended up running five sheets through the table saw as rips just to salvage them, which added about six hours and a whole replan of the cut list. Now everything sits on 2x4 stickers at least 3 inches off the floor, even overnight. Anyone else get burned by slab moisture, or do you just never store stock flat?
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nina_taylor19h ago
My grandpa built cabinets in a damp basement for 40 years and swore by laying every sheet on a couple of old broom handles. We all thought he was just being cheap and weird about it. Then he passed and we cleaned out the shop, and every single board in that pile was dead flat, some of it sitting there since the 80s. Meanwhile my uncle stored his stock flat on the floor for one winter and it came out looking like potato chips. Grandpa never explained himself, he just did it and moved on. Took me losing a batch of birch to finally get it.
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