I got a nice Cherry board from my local hardwood guy to make some boxes. I selected a nice 5/4+ board about 7” wide and 108” long, rough sawn. They store their stock in a closed warehouse that’s not climate controlled.
When I got it home I let it sit in my shop for a couple days before I did anything. I cut a couple 12” lengths off and flattened/trued one side with hand planes. I flipped it over and got the other side close, then ran it through my thickness planer.
The next step was to resaw, which went without a hitch. I ran both halves through the thickness planer again to get both to a uniform thickness, then smoothed with my 4 1/2 to eliminate mill marks. The surface was like glass. My confidence was bolstered.
Two days later I was able to get back in the shop. My perfect box sides were warped in both directions. They are unusable.
So….internal stress? Moisture content? Not enough time to acclimate prior to milling? All three? Hoping some Creekers wiser than I (and more experienced in resawing) can share some experience.