how to unwarp a box lid in a hurry

[Dave Cohen]

I have a small box that was stored in either a humid place or a place with rapid temp changes (possibly near base board heat)

Is there anyway to unwarp the lid over night, and then I will probably put batons on it to prevent it from warping again.

Need to give the box away this weekend...

Thanks again

p.s. it was already finished with Danish oil

[Gary Breckenridge]

You might try heat and steam and a giant clamp and cauls with hundreds of lbs. of force. But this might blow up the box.:(